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Gupta, Sangeeta

• Wood Micro-structural Studies of Indian Rutaceae Part III : Tribe Flindersiae

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Authors

Nisha Bhardwaj , Sangeeta Gupta

Source

Indian Forester, Vol 135, No 4 (2009), Pagination: 500-504

Abstract

The present study deals with the detailed wood anatomy of the Indian species of the genus Chloroxylon swietenia DC belonging to the tribe of Flindersioideae of the family Rutaceae. Photomicrographs have been given for the diagnostic features. The wood of this tribe is used for carving, turnery and mathematical instruments. The genera includes mostly diffuse porous woods with marginal and diffuse parenchyma; exclusively simple perforation plate; nonvestured, alternate and minute inter vessel pitting with coalescent aperture. In all the samples prismatic crystals in chambered parenchyma cells were observed. New reports include coalescent aperture in the vessels and crystals in fibres for the first time.

Keywords

Chloroxylon swietenia, Wood Anatomy

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• Wood Micro-structural Studies of Indian Rutaceae Part V: Tribe Toddalieae

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Authors

Nisha Bhardwaj , Sangeeta Gupta

Source

Indian Forester, Vol 135, No 8 (2009), Pagination: 1117-1126

Abstract

The present study deals with the detailed wood anatomy of 3 Indian species belonging to 3 genera Acronychia Forst., Skimmia Thunb. and Vepris Comm. Of tribe Toddalieae under family Rutaceae. The results are summarized in the tables and identification key has been developed for the separation of 3 species of this tribe. Photomicrographs have been given for the diagnostic features. The woods of this tribe are used for making wheels, carts, helves, tool handles and agricultural implements. The wood anatomical parameters suggest that the tribe Toddalieae is a heterogeneous tribe characterized by diffuse porous woods. Skimmia have dendritic pattern in vessels. Growth ring distinct due to marginal bands of parenchyma; simple perforation plate; coalescent aperture; fibres non-septate. Almost all type of parenchyma represented in the species. Rays homogeneous to heterogeneous. Prismatic crystals and silica bodies present in fibre, rays and parenchyma of only one genus Vepris. Silica bodies are rarely present in rays in Acronychia. These three genera had not been reported in the Indian literature before present study. Since this is the last tribe of the family Rutaceae, a species identification key of the Indian species of the family Rutaceae has also been given along with tables illustrating both qualitative and quantitative features of this family.

Keywords

Rutaceae, India, Acronychia, Skimmia, Vepris, Wood anatomy

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• Wood Micro Structural Studies of Indian Rutaceae Part IV: Tribe Zanthoxyleae

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Authors

Nisha Bhardwaj , Sangeeta Gupta

Source

Indian Forester, Vol 135, No 6 (2009), Pagination: 779-798

Abstract

The present study deals with the detailed wood anatomy of the 9 Indian species of 3 genera viz. Melicope Forst., Tetradium Hook. and Zanthoxylum Linn. belonging to the tribe of Zanthoxyleae of the family Rutaceae. The results are summarized in the tables and identification key has been developed for the separation of all the 10 species of this tribe. Photomicrographs have been given for the diagnostic features. The woods of this tribe are used for planks, rafters, match splints, plywood, cabinet work, axe handles, legs of beds, chair and packing cases. The wood anatomical parameters suggest that the tribe Zanthoxyleae is a heterogeneous tribe characterized by ring to diffuse porous woods; growth ring distinct to indistinct distinct due to marginal bands of parenchyma; simple to reticulate perforation plate; coalescent aperture; inter vessel pits minute to small; fibres non-septate. Almost all type of parenchyma present in all the species. Rays homogeneous to heterogeneous. Prismatic crystals in rays present in all the species except Melicope lunuankenda, Z. rhetsa and Z. oxyphyllum. Silica bodies present in fibres, rays and parenchyma in Melicope lunuankenda and Tetradium fraxinifolium. New reports include coalescent aperture in the entire family. Crystals in fibres and silica bodies reported for the first time of Tetradium and Melicope.

Keywords

Indian Rutaceae, Melicope, Tetradium, Zanthoxylum, Wood Anatomy

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• Wood Micro-structural Studies of Indian Rutaceae Part II: Tribe Citreae

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Authors

Nisha Bhardwaj , Sangeeta Gupta

Source

Indian Forester, Vol 134, No 12 (2008), Pagination: 1612-1635

Abstract

The present study deals with the detailed wood anatomy of the 10 Indian species of 6 genera viz. Aegle Correa, Atalantia Correa, Citrus Linn., Feronia Linn., Limonia Linn. and Paramignya Wight. belonging to the tribe Citreae of the family Rutaceae. The results are summarized in the tables and identification key has been developed for the separation of all the 10 species of this tribe. Photomicrographs have been given for the diagnostic features. The woods of this tribe are suitable for small knife handles, penholders, mathematical instruments, house building, naves of wheels, oil crushers and engraving purposes. The wood anatomical parameters suggest that the tribe Citreae is a homogeneous tribe characterized by diffuse porous woods; growth ring distinct due to marginal bands of parenchyma; simple perforation plate; coalescent aperture in few vessels; fibres non-septate. Almost all type of parenchyma are covered in these species. Rays homogeneous to heterogeneous. Prismatic crystals are present in fibres of all the genera except Citrus and Feronia. Crystals in rays and parenchyma present in all the genera. Silica bodies in rays and parenchyma in only one genus Paramignya. New reports include coalescent aperture in the entire family. Crystals in fibre of Aegle, Limonia and Atalantia; crystals in rays of Aegle, Citrus and Limonia; silica bodies in rays and parenchyma of Paramignya. These features are reported for the first time in this tribe.

Keywords

Wood Anatomy, Indian Rutaceae, Tribe Citreae, Aegle, Atalantia, Citrus, Feronia,
Limonia, Paramignya

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• Wood Micro-structural Studies of Indian Rutaceae Part I : Tribe Clauseneae

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Authors

Nisha Bhardwaj , Sangeeta Gupta

Source

Indian Forester, Vol 134, No 7 (2008), Pagination: 875-893

Abstract

The present study deals with the detailed wood anatomy of the 8 Indian species of 4 genera viz. Micromelum Bl., Glycosmis Correa, Clausenea Burm. and Murraya Linn. belonging to the tribe Clauseneae of the family Rutaceae. The results are summarized in the tables and identification key has been developed for the separation of all the 8 species of this tribe. Photomicrographs have been given for the diagnostic features. The woods of this tribe are used for carving, turnery and mathematical instruments. The wood anatomical parameters suggest that the tribe Clauseneae is a homogeneous tribe characterized by diffuse porous woods; growth ring distinct due to marginal bands of parenchyma; simple perforation plate; coalescent aperture in few vessels; fibres non-septate. Almost all type of parenchyma are covered these species. Rays homogeneous to heterogeneous. Prismatic crystals are present in fibres of Glycosmis winitii, Clausena excavata, Murraya paniculata and Murraya koenigii. Crystals in rays are present in all the species except Clausena excavata and C. lansium. Crystals in parenchyma present in all the genera. Silica bodies occurs in parenchyma in only one species Murraya koenigii and in fibres in Clausena excavata and Murraya koenigii. New reports include coalescent aperture in the entire family. Crystals in fibres of Murraya; crystals in chambered parenchyma of Glycosmis; silica bodies in parenchyma of Murraya koenigii; silica bodies in fibres of Clausena excavata and Murraya koenigii. These features are reported for the first time in this tribe.

Keywords

Clausenea, Glycosmis, Micromelum, Murraya and Wood Anatomy

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• Occurrence of Different Perforations in Perforated Ray Cells and Vessels of Indian Elaeocarpaceae

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Authors

Sangeeta Gupta , Manisha Agarwal

Source

Indian Forester, Vol 133, No 4 (2007), Pagination: 573-576

Abstract

Perforated ray cells have been recorded for the first time in Indian species of Elaeocarpus and Sloanea. These perforated ray cells have scalariform to reticulate perforation plate while the vessel element has simple perforation plate in family Elaeocarpaceae.

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• Wood Microstructure, Ultrastructure and Systematic Study of Indian Terminalia

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Authors

Sangeeta Gupta , Magan Singh

Source

Indian Forester, Vol 131, No 8 (2005), Pagination: 995-1011

Abstract

The genus Terminalia L. is of great forestry and economic importance, as it includes a number of valuable timbers, gum and tannin yielding species. It comprises of 250 species distributed throughout the tropical and sub-tropical regions of the world. In India, the genus is represented by 18 species. In this paper a detailed microscopic wood anatomical survey of the 15 species of this genus is presented based on the standard list of features given by International association of Wood Anatomists (lAWA). Numeric key based on IAWA features and species identification key has been developed based on the study. Photomicrographs have been added of microstructure and ultra structure features as seen under Scanning Electron Microscope (SEM). Remarks on systematic positions of species have been presented specially with regards to T. tomentosa and T. chebula group.

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• Xylotomic Study of the Family Sapindaceae: Microstructure, Systematics and Ecological Trends

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Authors

Manisha Agarwal , Sangeeta Gupta , Veena Painuly

Source

Indian Forester, Vol 131, No 8 (2005), Pagination: 1024-1040

Abstract

The present study provides detailed wood anatomical features of the family Sapindaceae. The wood anatomy of 18 species belonging to 14 genera of Sapindaceae native to or commonly cultivated in India is described in detail and a species wood anatomical key is given. The wood anatomical features collected are as per the feature list given by International Association of Wood Anatom ists. Based on constant characters, a species identification key has been developed for the separation of the taxa at the species level. Photomicrographs showing diagnostic features have bcen given. Based on wood microstructure inter-tribe and sub familial studies were described. Relationship between wood element dimensions and their ecology has also been established.

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• Wood Microstructure of Indian Staphyleaceae with Particular Reference to Unusual Type of Perforated Ray Cell

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Authors

Sangeeta Gupta , Manisha Agarwal

Source

Indian Forester, Vol 131, No 8 (2005), Pagination: 1049-1055

Abstract

This paper describes the wood anatomy and presence of perforated ray cells in the family Staphyleaceae. The wood of this family is characterized by diffuse porosity, vessel with scalariform perforation plate, scanty paratracheal parenchyma, rays mainly multiseriate with perforated ray cell, non-septate fibers and presence of fibre tracheids. The perforated ray cells are larger than other ray cells with an unusual combination of reticulate and foraminate type of perforation plate.

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• New Record of Occurrence of Perforated Ray Cells in the Order Celastrales from India

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Authors

Sangeeta Gupta , Vishakha Saxena

Source

Indian Forester, Vol 131, No 8 (2005), Pagination: 1064-1070

Abstract

Perforated ray cells are reported in 17 species belonging to the six families of the order Celastrales, viz, Celastraceae, Hippocrateaceae, Salvadoraceae, Aquifoliaceae, Jcacinaceae and Dichapetalaceae. These perforated ray cells have simple perforations in 15 species while scalariform perforation plate were observed in 2 species, viz., Ilex denticulata Wallich ex Wight, and Ilex insignis Hook.f. The perforated ray cells were found located at the end of both uniseriate as well as multiseriate rays.

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• Intrusive Cavities in Fibres of Indian Woods

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Authors

Manisha Agarwal , Sangeeta Gupta

Source

Indian Forester, Vol 131, No 12 (2005), Pagination: 1602-1608

Abstract

Fibres with cavities were present in seven species of Aceraceae and one species of Anacardiaceae. The formations of the 'fibre cavities' is due to bifurcation of fibre, which encounters a cellular obstacle.

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• Indian Woods - their Medicinal Importance and Identification

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Authors

Sangeeta Gupta , B. M. Uniyal

Source

Indian Forester, Vol 129, No 10 (2003), Pagination: 1225-1240

Abstract

To overcome the difficulty of adulteration in medicines manufactured from woods , it is imperative that the correct identity of the wood is ascertained. The article deals with the anatomy and medicinal value of the 25 Indian woods that are well known for their medicinal properties and are also useful timber. Images of transverse section have been added to show their gross structure.

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• Perforated Ray Cells in Pistacia terebinthus - a New Record for Anacardiaceae

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Authors

Manisha Agarwal , Sangeeta Gupta , Laxmi Chauhan , Veena Painuly

Source

Indian Forester, Vol 128, No 5 (2002), Pagination: 562-566

Abstract

This paper reports perforated ray cells in the wood of Pistacia terebinthus of the family Anacardiaceae. In this species the perforated ray cells were found isolated , localized mainly on the ends of multiseriate rays. The perforated ray cells are larger than other ray cells , with simple perforation plate and bordered pits , as in vessel elements , located on radial walls.

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• An Expert System for Wood Anatomy Research, Image Display and Wood Identification

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Authors

Sangeeta Gupta , S. P. Kulshreshta , Laxmi Chauhan

Source

Indian Forester, Vol 128, No 8 (2002), Pagination: 917-925

Abstract

An expert system entitled 'Wood Anatomy Information System (WAIS)' has been developed for assisting in wood research, wood images display and wood identification. The software is quite comprehensive with provision for all details related to FRI Xylarium and anatomical structure of Indian hardwoods. It is user friendly and has five modules viz. feature description; data input and image display; wood identification; query; and report generation. The database on wood microstructure is developed using standard list of anatomical characters given by International Association of Wood Anatomists (IAWA). The same is used in deciphering information of interest and comparing different data sets of various families, genera and species. The data thus generated shall help in establishing phylogenetic relationship, microstructure variation, homogeneity and heterogeneity within families, relationship between features and above all in wood identification. Since the woods are studied on three planes therefore Wood Images of all the three surfaces viz transverse, radial and tangential shall be stored in this package. The same will serve the purpose of wood structure atlas. The system carries out identification through binary search. The computer filters as per the selected features and gives option of best subsequent feature that can narrow down the search considerable. Thus in about four to five steps the identification of an unknown wood sample can be achieved. This identification module has the flexibility of skipping the features not known to the user. Through Querying module selected taxa can be related to selected features so as to reflect upon the structural affinity between various features, species, genus and families. The Report module generates identification key for the family, genera or species.

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• Studies on the Effect of Spacing on the Wood Quality in some Clones of Populus deltoides

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Authors

Laxmi Chauhan , Sangeeta Gupta , R. C. Madhwal , Rajiv Pandey

Source

Indian Forester, Vol 127, No 1 (2001), Pagination: 101-106

Abstract

The results of a study on the effect of spacing on wood specific gravity, selected wood anatomical parameters and tree growth in two 9-10 year old plantations of 3 clones of Populus deltoides are reported. Significant effect of spacing was observed on specific gravity, fibre length, fibre diameter, vessel diameter, tree height and girth. While specific gravity shows an increase at wide spacing, fibre length has been found to decrease in the two plantations.

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• Interclonal, Intraclonal and within Tree Variation in Wood Parameters of Different Clones of Populus deltoides

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Authors

Laxmi Chauhan , Sangeeta Gupta , R. C. Madhwal , Rajiv Pandey , Mohinder Pal

Source

Indian Forester, Vol 127, No 7 (2001), Pagination: 777-784

Abstract

Variation in specific gravity and wood parameters was studied in 10 year old trees of 18 clones of Populus deltoides with promising growth rate. The sample discs were taken out at different heights viz. breast height, 25%, 50% and 75% of merchantable tree height. To study radial variation, each annual ring was sampled. Significant interclonal differences were observed in anatomical parameters and specific gravity while trees, within clones showed no significant effect. The specific gravity was found to be positively correlated with age, fibre length and vessel frequency and negatively related with fibre diameter and lumen diameter. A negative correlation was also observed between specific gravity and ring width. Within a tree, height and position of annual ring from pith had significant effect on fibre length, lumen diameter, vessel frequency and specific gravity. The specific gravity reaches maximum at 50% of tree height and fibre length at 25% of tree height showing decreasing trend upwards. At breast height fibre length and specific gravity increases rapidly pith outwards upto 6th year followed by a slower rate of increase upto 8th year with a tendency to level off from 8th year. Breast height values of specific gravity and fibre length have been found to be highly correlated with whole tree values for these two parameters. For the prediction of whole tree values from breast height values, regression models and multiplication factors have been derived for fibre length and specific gravity.

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• Wood Anatomy of Indian Shrubs: Part I- Family Lamiaceae

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Authors

Seema Bhandari , Sangeeta Gupta , Anuj Kumar , Naveen Kumar

Source

Indian Forester, Vol 136, No 8 (2010), Pagination: 1018-1023

Abstract

The present study deals with detailed wood microstructure of the family Lamiaceae from India. 4 species belonging to 4 genera of Lamiaceae have been described on the basis of their detailed wood microstructure, salient diagnostic features and photomicrographs. An identification key based on anatomical features has been developed for the separation of the species of this family. These species have quite different wood structure and are easily separable. However, these differences suggest unnatural classification of the family.

Keywords

Lamiaceae, Wood Anatomy, Indian Shrubs

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• Wood Microstructure of Indian Maytenus molina (Celastraceae) with Special Reference to Ecology

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Authors

Vishakha Saxena , Sangeeta Gupta

Source

Indian Forester, Vol 136, No 4 (2010), Pagination: 456-464

Abstract

The present study deals with the detailed wood microstructure of the genus Maytenus Molina (syn. Gymnosporia W. & A.) belonging to the family Celastraceae. Five species of Maytenus has been described on the basis of their detailed microstructure, salient diagnostic features and photomicrographs. An identification key based on anatomical features has been developed for the separation of the species of this genus. According to the present study M. emarginata (Willd.) DingHou and M. senegelensis (lam.) Exell could not be separated due to the same anatomy. This study is the first record of the wood microstructure of this genus. The correlation between selected wood anatomical features (qualitative and quantitative) and vegetation type (tropical and temperate) has been discussed in this paper. Inverse relationship was observed between vessel diameter and vessel frequency indicating conductive efficiency of this genus. Positive relationship between vessel frequency and vessel length was observed in tropical species while inverse relationship in temperate species. F/V and L/D ratios were found to be inversely correlated.

Keywords

Celastraceae, Maytenus, Wood Anatomy, Ecology

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• Diagnostic Importance of Crystals in Woods of Family Anacardiaceae

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Authors

Sangeeta Gupta , Manisha Agarwal

Source

Indian Forester, Vol 132, No 2 (2006), Pagination: 188-196

Abstract

The paper describes the presence, absence, distribution pattern and location of crystals in 36 species of 19 genera, both native and naturalized, of the family Anacardiaceae from India. The study indicated that in view of their occurrence, location specificity and distinctive types, these features are helpful in wood identification of most of the species of this family.

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• Xylotomic Account of Upland and Mangrove Species of Indian Rhizophoraceae with Special Remarks on Systematic, Ecological and Evolutionary Trends

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Authors

Sangeeta Gupta , Vishaka Saxena

Source

Indian Forester, Vol 138, No 7 (2012), Pagination: 628-637

Abstract

The present study deals with a comparative account of wood microstructure of the upland and mangrove species of the family Rhizophoraceae from India. The mangrove species studied are Bruguiera caryophylloides B1.,B. eriopetala W.&A, B. gymnorhiza Lam., B. parviflora W.&A., Ceriops candolleana Arnott., C. roxburghiana Arnott., Kandelia rheedii W.&A., Rhizophora conjugata L., R. mucronata Lam while two upland species studied are Blepharistemma corymbosum Wall. and Carallia lucida Roxb. An identification key based on salient diagnostic features has been developed for the separation of the species of this family. The same has been supplemented with photomicrographs. The analysis of correlation coefficient between selected quantitative features of mangroves and upland species of the family Rhizophoraceae has been discussed. The quantitative wood anatomical characteristic shows some differences in ecological trends between upland and mangrove species. Inverse relationship between vessel diameter and vessel frequency and positive relationship between fibre length & fibre diameter and vulnerability & mesomorphy were observed. All the mangrove species except for Ceriops are mesic while the upland species are highly mesic.

Keywords

Rhizophoraceae, Wood Microstructure, Ecology, Upland Species, Mangrove Species

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• Studies on Anatomical Variations in Different Clones of Populus deltoides

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Authors

Laxmi Chauhan , R. D. Raturi , Sangeeta Gupta

Source

Indian Forester, Vol 125, No 5 (1999), Pagination: 526-532

Abstract

Anatomical parameters of wood quality such as fibre characteristics, vessel frequency and diameter and proportion oftissues were examined in 8 year old trees of six Populus deltoides clones growing in plantations. Statistical analyses were conducted to determine clonal variations and effect of age on anatomical properties. The analysis indicated significant clonal variation in specific gravity, fibre length vessel length, fibre diameter, lumen diameter, vessel frequency and vessel diameter. The specific gravity, fibre lengt.h and vessel length also show an increase with age. The specific gravity has been found to be positively correlated with fibre length in all the clones but with vessel diameter only in 4 clones. A relative correlation was also observed between vessel area and specific gravity. Cell type percentage was not found to be significantly different among the clones but increase in fibre percentage is found to be related to the decrease in vessel percentage. The variation in wood quality parameters studied offers possibilities for selection of breeding stock with desirable wood quality.

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• Patterns of Rarity and Endemism in Flowering Plants - a New Approach in Conservation Planning

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Authors

Sangeeta Gupta

Source

Indian Forester, Vol 122, No 9 (1996), Pagination: 804-807

Abstract

India is well known for its great biodiversity. In order to protect it, over 470 protected areas have been created so far. Mainly on the basis of faunal wealth. Floral wealth had not given its due place specially at species level. The major reason for this being lack of adequate information on localities of important plant species, this leading to a gap on where to protect plant resources. In view of the above a methodology was evolved to find out potential sites on the basis of data related to rare endemic plant. A relationship was drawn between broad distribution and frequency of collection to assess possible rarity value of each significant taxa. This methodology provides objectivity to selection of potential sites for plant conservation.

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• Wood Microstructure Studies of the Order Oxalidales from Erstwhile India

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Authors

Sangeeta Gupta , Vishakha Saxena

Source

Indian Forester, Vol 137, No 2 (2011), Pagination: 205-215

Abstract

The order Oxalidales has been divided into 6 families, out of these 2 families are represented in India viz. Elaeocarpaceae and Oxalidaceae. The present study deals with detailed wood microstructure of both families. 18 species and 2 genera of the family Elaeocarpaceae and single species belonging to single genus of the family Oxalidaceae have been described for their detailed wood microstructure, salient diagnostic features and photomicrographs. Wood anatomical studies also support the grouping of both the families together.

Keywords

Oxalidales, Elaeocarpaceae, Oxalidaceae, Wood Anatomy, India

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• Discrimination of Bamboo Species by Shape Descriptor of Culm Sheath

Abstract Views :495  |  PDF Views:1

Authors

Krishna Singh , Indra Gupta , Sangeeta Gupta

Source

Indian Forester, Vol 139, No 2 (2013), Pagination: 126-130

Abstract

Bamboo has been widely used as building material throughout the world. There are about 1200-1500 species of bamboos. The bamboo culm sheath shapes provide valuable data in identification of bamboo species. Automated recognition of bamboo has not yet been well established mainly due to lack of research in this area, non-availability and difficulty in obtaining the database. Using digital image processing and pattern recognition techniques, a supervised classification procedure of three different bamboo species has been developed. In the proposed work, an automated bamboo species recognition system based on shape features of bamboo culm sheath has been developed by calculating the Legendre moment. A confusion matrix is created to quantify the class wise and the classifier accuracy. The system can eliminate the need for laborious human recognition method requiring a plant taxonomist. The results obtained shows considerable recognition accuracy proving that the techniques used is suitable to be implemented for commercial purposes.

Keywords

Culm sheath, Fourier moment, Legendre moment, Radial distance

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• Wood Culture in Ancient India as Reflected from Identification of Confiscated Wooden Artifacts Dating between ^14-19th Century A.D.

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Authors

Sangeeta Gupta , K. S. Rana

Source

Indian Forester, Vol 139, No 9 (2013), Pagination: 839-842

Abstract

Confiscated wooden artifacts in the form of sculpture, boxes, beds belonging to 14 -19 centuries were studied for their wood type. Based on very small wood chips taken out from the artifacts, the wood identification was carried out. The artifacts were found to be made up of Juniperus species, Madhuca longifolia (Mahua), Tectona grandis (Teak), Pterocarpus marsupium (Bijasal), Ficus species and Acacia species. All these woods except for Ficus are well known woods famous for their durability and strength. The choice of species of these woods for furniture and sculpture is indicative of good knowledge of wood properties during those times.

Keywords

Wooden Artifacts, Wood Identification, Juniperus, Madhuca Longifolia, Tectona grandis, Pterocarpus marsupium.

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• Characterization of Antifungal Metabolites of Chaetomium globosum Kunze and their Antagonism against Fungal Plant Pathogens

Abstract Views :394  |  PDF Views:202

Authors

S. K. Biswas ¹, Rashmi Aggarwal ², K. D. Srivastava ², Sangeeta Gupta ², Prem Dureja ³

Affiliations
1 Department of Plant Pathology, C.S.A. University of Agriculture and Technology, Kanpur 208002, IN
2 Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, IN
3 Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110012, IN

Source

Journal of Biological Control, Vol 26, No 1 (2012), Pagination: 70-74

Abstract

Chaetomium species which are normally found in soil and organic compost are noted for the presence of secondary metabolite with biological activities. Secondary metabolites from culture filtrate of Chaetomium globosum Kunze were extracted by solvent extraction method using ethyl acetate and separated by thin layer chromatography in five major bands of different R_f values. These compounds were further purified and fractioned with column chromatography. Compound '1' eluted with hexane (fraction 1-18) as color less liquid (R_f 0.84), and other five compounds (2,3,4,5,6) with different ratio of hexane, benzene and acetone as solvent in different fractions as: 34-63 (R_f. 0.46), 71-75 (R_f 0.31), 78 (R_f 0.58), 76-77 (R_f 0.58) and 85-89 (R_f 0.47) were eluted and purified. GS-MS and NMR studies revealed that compounds 2-6 were identical to spectral data of metabolites, chaetomin, BHT, mollicelin G, isomer of mollicelin G and cochiliodinol respectively. One more elution with benzene: acetone (95 : 5 v/v) gave a pale yellow crystalline compound of R_f 0.37 identified as chaetoglobosin. Bioassay studies with two compounds i.e., chaetoglobosin and chaetomin revealed significant growth inhibitory activity against various plant pathogens such as Bipolaris sorokiniana, Macrophomina phaseolina, Rhizoctonia solani and Pythium ultimum under in vitro conditions.

Keywords

Chaetomium globosum, Biocontrol and Secondary Metabolites, HPLC GC- MS.

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• Women Mental Health and Protective Factors

Abstract Views :210  |  PDF Views:0

Authors

Aruna Singh ¹, Sohini Singh ², Sangeeta Gupta ³

Affiliations
1 Singhania University, Rajasthan, IN
2 Amity Institute of Biotechnology Amity University, Noida, IN
3 Kumari Mayawati Govt. Degree College Gautum Budhha Nagar, IN

Source

International Journal of Education and Management Studies, Vol 2, No 3 (2012), Pagination: 360-364

Abstract

The worth of a civilization can be judged from the position that it gives to women. Women's role in our society as a caregiver cannot be ignored. Twenty-four hours a day, seven days a week, whether their children are sick, their husbands are out of work or their parents are old and frail and need attending, they will cope. Mental health problems are increasing part of health problems now-a-days around the world. Mental health problems are common at all stages of life. People are not aware of concept of mental health. Even the educated person and medical personnel are not well aware of mental hygiene and positive mental health. The present paper reviews common mental health problems of women in India and their protective factors.

Keywords

Women, Mental Health, Protective Factors

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• Wood Anatomy of Croton L. (Euphorbiaceae) Reflecting Systematic, Ecological and Evolutionary Aspects

Abstract Views :183  |  PDF Views:0

Authors

Prem Prakash Jangid ¹, Sangeeta Gupta ¹

Affiliations
1 Wood Anatomy Discipline, Botany Division, Forest Research Institute, Dehradun, IN

Source

Indian Forester, Vol 141, No 2 (2015), Pagination: 154-160

Abstract

Wood microstructure with systematic, ecological and evolutionary aspects of six species of Croton L. (Euphorbiaceae) from India is described. Wood is diffuse porous, radial multiples of 4 or more common with some short radial multiples and solitary vessels. Perforation plate simple, intervessel pits rounded and alternate. Fibre libriform, non-septate and thin to thick walled. Parenchyma apotracheal, diffuse to diffuse in aggregate and reticulate or narrow banded. Rays heterocellular, containing non-chambered prismatic or rhomboidal crystals and druses. Disjunctive ray parenchyma walls and perforated ray cell observed. C. scabiosus and C. malabaricus show distinctness in some ray and vessel characteristics. Species show adaption to highly mesic condition except C. scabiosus. Few remnants of wood anatomy are evident of both primitive and advance characters in this genus. Systematic wood anatomical survey shows its close relation to subgenus Croton and distance relation to subgenus Moacroton and sister groups of genus Croton, such as, Cubacroton, Brasiliocroton, Acidocroton and Astrea.

Keywords

Croton, Euphorbiaceae, Wood Anatomy, Crotonoideae, Systematic, Ecological, Evolutionary.

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• Comparative Analysis of Nosql Specimen with Relational Data Store for Big Data in Cloud

Abstract Views :280  |  PDF Views:131

Authors

Sangeeta Gupta ¹

Affiliations
1 Jawahar Lal Nehru Technological University, Kakinada, Andhra Pradesh, IN

Source

International Journal of Distributed and Cloud Computing, Vol 3, No 1 (2015), Pagination: 17-23

Abstract

The massive amount of data collected by various fields is a challenging aspect for analysis using the available storage technologies. Relational databases are a traditional approach of data storage more suitable for structured data formats and are constrained by ACID properties. As the modern world data in the form of word documents, pdf files, audio and video formats is unstructured, where tables and schema definition is not a major concern. Relational databases such as Mysql may not be suitable to serve such Bigdata. An alternate approach is to use the emerging Nosql databases. This paper presents a comparative analysis of Nosql types such as Hbase, Mongodb, Simple DB and Big Table with relational database like Mysql and specifies their limitations when applied to real world problems. It also proposes solution to overcome these limitations using an integrated data store which serve to be beneficial over the mentioned Nosql and Mysql stores in terms of efficiently implementing simple and complex queries yielding better performance.

Keywords

Mysql, Nosql, Big Data, HBase, MongoDB, Simple DB, Big Table, Integrated Store.

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• Wood Anatomy of the Tribe Briedelieae (Euphorbiaceae S.L.) Reflecting the Systematic, Ecological and Evolutionary Aspects

Abstract Views :188  |  PDF Views:0

Authors

Prem Prakash Jangid ¹, Sangeeta Gupta ¹

Affiliations
1 Wood Anatomy Discipline, Botany Division, Forest Research Institute, Dehra Dun, IN

Source

Indian Forester, Vol 141, No 12 (2015), Pagination: 1296-1304

Abstract

The present paper provides comprehensive wood anatomical survey of seven Indian species belonging to two genera Briedelia and Cleistanthus of the tribe Briedelieae (Euphorbiaceae s.l.). Wood microstructure of Cleistanthus found heterogeneous in certain extent within tribe. Systematic relationships between Briedelia and Cleistanthus were evaluated. The systematic wood anatomical study did not favour the recent morphological and molecular phylogenetic circumscription of classification of the tribe. Cleistanthus showed adaptation to xeric environment and Briedelia showed adaptation to mesic environment. Briedelia contain most of advance wood anatomical features while Cleistanthus had a combination of both advance and primitive wood anatomical features.

Keywords

Briedelia, Briedelieae, Cleistanthus, Euphorbiaceae, Systematic, Wood Anatomy.

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• Students’ Performance and Employability Prediction through Data Mining: A Survey

Abstract Views :178  |  PDF Views:0

Authors

Tripti Mishra ¹, Dharminder Kumar ², Sangeeta Gupta ³

Affiliations
1 MewarUniversity, Chittorgarh – 312901, Rajasthan, IN
2 Department of Computer Science, G. J. University, Hisar – 125001, Haryana, IN
3 Guru Nanak Institute of Management, West Punjabi Bagh – 110026, Delhi, IN

Source

Indian Journal of Science and Technology, Vol 10, No 24 (2017), Pagination: 

Abstract

Objective: To systematically review the work done in the field of academic performance prediction and employability prediction of students in higher education. Methods: The survey first explain show higher education has become an exciting field of research and why the prediction of academic performance and employability is beneficial for the institutions. We also explain briefly in how many ways higher education is being provided world-wide. Then we discuss the work done in both the areas of prediction. Findings: The survey explores existing research highlights and finds that prediction of academic performance has progressed a lot but employability prediction is yet to mature. Application: It further suggests few parameters that have not been considered so far in predicting the performance or employability.

Keywords

Academic Performance, Data Mining, Employability, Higher Education, Prediction, Survey

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• 3-Equitable Prime Cordial Labeling of Some Graphs

Abstract Views :293  |  PDF Views:0

Authors

Sweta Srivastav ¹, Sangeeta Gupta ¹

Affiliations
1 Dept. of Mathematics, Sharda University, Gr. Noida, IN

Source

International Journal of Engineering Research, Vol 4, No 3 (2015), Pagination: 115-117

Abstract

In this paper we have investigated the 3-equitable prime cordial labeling behavior of cycle with one chord, Twin chord, and split graph G.

Keywords

3-Equitable Prime Cordial Labeling, Cycle With One Chord, Cycle With Twin Chord, and Split Graph, AMS Subject Classification:05C78.

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• IPR is Not a Cup of Tea for Teaching Fraternity:A Study of IPR Challenges

Abstract Views :342  |  PDF Views:6

Authors

Sangeeta Gupta ¹, Mansi Saxena ¹

Affiliations
1 MERI, IN

Source

MERI-Journal of Management & IT, Vol 11, No 2 (2018), Pagination: 71-85

Abstract

Digitalized and informative era invites new avenues to explore and invent. Invention so far is undermined as original creator is not equally rewarded and awarded IPR turned as rolling coin for all originators and gained revolutionary acceptance in all areas and industries: pharmaceutical to steel, printing to software, energy to mining, electrical to hospitality, music, art, literature and films to arm industry. Copyright, Patent, Trademark, License are the buzzwords but unexplored by academicians and learning resources. Today, teacher as a mentor/facilitator are more engrossed in creating original study material, interesting and attractive to bring more participants in the classes. IPR is the shield encompassing a wide variety of rights pertaining and protecting the ownership of creative work. Exploratory research was conducted to analyze the major perceived challenges of IPR, impact of demographic profile on IPR, usage of social networking sites as teaching and learning process.

Keywords

Intellectual Property Right (IPR), Teaching & Learning Process, Copyright, Social Networking Site.

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• To study the role of HR Analytics in Predicting the Economic Value of Organization’s Human Capital Investment

Abstract Views :441  |  PDF Views:12

Authors

Swati Chawla ¹, Puja Sareen ², Sangeeta Gupta ³

Affiliations
1 Amity University, IN
2 Amity University, Noida, IN
3 MERI, IN

Source

MERI-Journal of Management & IT, Vol 12, No 1 (2018), Pagination: 37-59

Abstract

Over the past many years, Human Resource Management has changed. It has moved from an operational discipline towards a more strategic discipline. The popularity of the term Strategic Human Resource Management (SHRM) exemplifies this. The data-driven approach that characterizes HR analytics is in line with this development. By using HR analytics organizations do not rely on gut feeling anymore. Analytics enables HR professionals to make data-driven decisions. Furthermore, analytics helps to test the effectiveness of HR policies and different interventions. The use of data analytics in the field of human resource development is becoming increasingly common. This rise in popularity is accompanied by skepticism about the ability of human resource professionals to effectively utilize data analytics to reap organizational benefits

The HR world is abuzz with talk of big data and the transformative potential of HR analytics. With the changing processes HR analytics is a ‘must have’ capability that will ensure HR's future as a strategic management function while transforming organisational performance for the better. It argues that unless the HR profession wises up to both the potential and drawbacks of this emerging field and engages operationally and strategically to develop better methods and approaches, it is unlikely that existing practices of HR analytics will deliver transformational change. Indeed, it is possible that current trends will seal the exclusion of HR from strategic, board‐level influence while doing little to benefit organisations and actively damaging the interests of employees

Keywords

HR Analytics, Human Resource Management, Talent Analytics, Strategic Human Resource Management, Strategic Workforce Planning, ROI, Human Capital Investment.

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• Security Mechanism for Twitter Data Using Cassandra in Cloud

Abstract Views :131  |  PDF Views:0

Authors

Sangeeta Gupta ¹, Nikitha Kumari ²

Affiliations
1 Associate Professor, CSE, Chaitanya Bharathi Institute of Technology, Hyderabad, IN
2 M.Tech 2nd Year, CSE, Vardhaman College of Engineering, Hyderabad, IN

Source

International Journal of Distributed and Cloud Computing, Vol 7, No 2 (2019), Pagination: 1-6

Abstract

Most popular social networking and the broadly utilized site is Twitter, where clients share their opinions on posts through tweets. Every tweet has a limit of 140 characters. Tweets are in the form of structured and unstructured data which consist of characters, alphanumeric, special symbols, etc. Every single tweet may also contain some unwanted characters. In this work, twitter data are chosen to perform an analysis. Pre-handling methods are utilized to expel undesirable characters from tweets. Also, to enhance security, the encryption module is created, and the information is then put away in Cassandra. Just the individuals who hold the key can unscramble the information. The whole information is then put away in the cloud for upgrading the security.

Keywords

Cassandra, Encryption, Share Market, Text Pre-Processing, Twitter.

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