- D. Mukherji
- S. K. Sarkar
- A. Datta
- S. K. Sanyal
- D. Chakraborty
- B. U. Choudhury
- S. B. Singh
- N. Chinza
- C. Lalzarliana
- S. K. Dutta
- S. Chowdhury
- T. Boopathi
- Lungmuana
- A. R. Singh
- S. V. Ngachan
- P. Ghosh
- G. Mitra
- I. Gupta
- P. Nandi
- M. Kar
- D. Banerjee
- G. Dash
- P. Nath
- A. Ratankumar Singh
- M. Thoithoi Devi
- N. Hemanta Singh
- N. K. Hedau
- A. Gahalain
- Arun Kumar
- P. K. Agrawal
- J. C. Bhatt
- A. Choudhury
- S. K. Dash
- A. Roy
- S. Bahadur
- S. Das
- S. Roy
- D. Ray
- B. Chowdhury
- S. Ray
- S. V. Narayanan
- A. Bandyopadhyay
- P. K. Pal
- D. K. Bandyopadhyay
- S. S. Patil
- K. P. Suresh
- A. Prajapati
- D. Hemadri
- P. Roy
- S. Lungmuana
- Vishambhar Dayal
- Romila Akoijam
- S. K. Sharma
- K. K. Datta Gupta
- K. N. Chakrabarti
- Journal of Surface Science and Technology
- Current Science
- International Journal of Medical and Dental Sciences
- Journal of Environment and Sociobiology
- Journal of Horticultural Sciences
- Research Journal of Pharmaceutical Dosage Form and Technology
- Journal of the Association of Engineers, India
- Journal of Engineering Education Transformations
- Manufacturing Technology Today
- Veterinary World
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Saha, S.
- Photochemical Behaviour of [Co(NH3)5HC2O4]2+ in Microheterogeneous Media
Authors
1 A.B.N. Seal College, Couch Behar, IN
2 Bethune College, Calcutta, IN
3 Department of Chemical Technology, University College of Science and Technology, Calcutta-700 009, IN
Source
Journal of Surface Science and Technology, Vol 9, No 1-4 (1993), Pagination: 17-31Abstract
In the present work a comparative study of the photochemical behaviour (steady-state photolysis) of oxalatopentaamminecobalt (III) perchlorate, [Co(NH3)5HC2O4](ClO4)2, in pure aqueous as well as in premicellar and micellar solutions of three different (anionic, cationic and non-ionic) surfactants has been undertaken. The photochemical reactivity of the complex has been found to charge in the following respects. (1) The photoaquation of ammonia does not take place in micellar solutions of all the three surfactants used. (2) The quantum yield of Co2+(ΦCo2+) changes as the concentration of surfactant changes with a concomitant change in the structure of the solution. The manner in which ΦCo2+ varies depends on the nature of the surfactant. The CMC of a surfactant can be determined from the plot of ΦCo2+ vs. -log [Surfactant]. (3) The effect of [CH3COO-] variation on ΦCo2+ is more prominent in micellar solutions.- Phosphate Sorption/Desorption Kinetics in Some Acidic Soils
Authors
1 Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Kalyani 741235, West Bengal, IN
Source
Journal of Surface Science and Technology, Vol 10, No 1-4 (1994), Pagination: 99-106Abstract
The kinetics of phosphate sorption/desorption in eight acidic soils were studied. The data were fitted to a modified Freundlich-type of kinetic equation and the modified Elovich equation to yield several kinetic parameters. The kinetic experiments were conducted at 35 ± 1°C and for some soil, also at 45 ± 1°C. The phosphate sorption rate coefficients and the Elovich kinetic parameters were in agreement with the trend of phosphate sorption equilibrium behaviour of the present soils. The phosphate sorption kinetic parameters showed significant correlations with soil organic matter and oxalate-extractable aluminium and iron of the soils. The possibility that an association of organic matter in acidic soils with the hydrous sesquioxides of iron and aluminium leads to the formation of chelate complexes having large active surface area for phosphate sorption has been considered for the present soils. The sorption rate coefficients increased with temperature, in agreement with the simple Arrhenius behaviour. The activation energies for phosphate sorption suggested the chemical nature of the given sorption process.
During desorption, the sorption rate parameter was lower than that during the corresponding sorption run, indicating the possibility that the sorted phosphate might have undergone transformations that render it less susceptible to release.
Keywords
Phosphate Sorption/Desorption Kinetics, Modified Freundlich-Type of Kinetic Equation, Elovich Equation, Soil Organic Matter and Hydrous Sesquioxides.- Spatial Variability in Temporal Trends of Precipitation and its Impact on the Agricultural Scenario of Mizoram
Authors
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Umiam 796 103, IN
3 Directorate of Economics and Statistics, and Government of Mizoram, 796 001, IN
4 Directorate of Crop Husbandry, Government of Mizoram, 796 001, IN
Source
Current Science, Vol 109, No 12 (2015), Pagination: 2278-2282Abstract
Long-term monthly rainfall observations (1986-2014) were analysed for 12 rain-gauge stations installed at variable altitudes of Mizoram. Our objective was to assess the temporal change in the standardized precipitation index (SPI) values at different timescales using Mann-Kendall trend tests. Significant reductions in post-monsoon and winter rainfall were recorded for most of the sites. Increasing dryness during the winter months may intensify the acute water shortage in Mizoram. Our results emphasize the altitudinal insensitivity of mean monthly rainfall trend and prove the urgent need for adopting suitable water management practices to cope with the water scarcity problem to increase the resiliency of rabi agriculture in Mizoram in near future.Keywords
Agriculture, Rainfall Pattern, Standardized Precipitation Index, Spatial Variability.References
- Das, A., Ghosh, P. K., Choudhury, B. U., Patel, D. P., Munda, G. C., Ngachan, S. V. and Chowdhury, P., Climate change in northeast India: recent facts and events – worry for agricultural management. ISPRS Archives XXXVIII-8/W3 Workshop Proceedings: Impact of Climate Change on Agriculture, 2009, pp. 32–37.
- Ravindranath, N. H. et al., Climate change vulnerability profiles for North East India. Curr. Sci., 2011, 101(3), 384–394.
- Jhajharia, D., Shrivastava, S. K., Sarkar, D. and Sarkar, S., Temporal characteristics of pan evaporation trends under the humid conditions of northeast India. Agric. For. Meteorol., 2009, 149, 763–770.
- Jain, S. K., Kumar, V. and Saharia, M., Analysis of rainfall and temperature trends in northeast India. Int. J. Climatol., 2013, 33(4), 968–978.
- Saikia, U. S. et al., Shift in monsoon rainfall pattern in the North Eastern region of India post 1991. J. Agrometeorol., 2013, 15(2), 162–164.
- WMO, Standardized Precipitation Index User Guide. (eds Svoboda, M., Hayes M. and Wood, D.) WMO-No. 1090, World Meteorological Organization, Geneva, Switzerland, 2012, pp. 8–24.
- McKee, T. B., Doesken, N. J. and Kleist, J., The relationship of drought frequency and duration to time scales. In Proceedings of the IX Conference on Applied Climatology. American Meteorological Society, Boston, MA, 1993, pp. 179–184.
- Naresh Kumar, M., Murthy, C. S., Sesha Sai, M. V. R. and Roy, P. S., On the use of Standardized Precipitation Index (SPI) for drought intensity assessment. Meteorol. Appl., 2009, 16, 381–389.
- Jha, S., Sehgal, V. K., Raghava, R. M. and Sinha, M., Trend of standardized precipitation index during Indian summer monsoon season in agroclimatic zones of India. Earth Syst. Dyn. Discuss., 2013, 4, 429–449.
- Evaluation of Different Virulence Factors and Antibiogram of Uropathogenic Escherichia Coli (UPEC) Isolated in a Tertiary Care Centre
Authors
1 Department of Microbiology, Burdwan Medical College, IN
2 Microbiology NRS Medical College, Kolkata, IN
Source
International Journal of Medical and Dental Sciences, Vol 5, No 1 (2016), Pagination: 1027-1032Abstract
Background:Escherichia coli (E.coli) is most common organism responsible for UTI because of its various virulence factors to break the inertia of mucosal barrier. Objective: In this present study we aimed to access the different virulence factors and their correlation with multi-drug resistance.Materials and Methods: This was a prospective study done at Burdwan Medical College and Hospital, West Bengal. A total 100 urine samples from clinically suspected UTI patients were processed by standard microbiological procedures. Fifty (50) E.coli were isolated on MacConkey agar showing significant bacteriuria from the 100 samples studied. The virulence factors studied were Haemolysis, Bio-flim formation, Mannose sensitive/resistant haemagglutination, serum resistance and antibiotic resistance pattern. For bio-film three methods - congored agar, tube method and tissue culture plate method were compared. Haemolysis was observed on sandwich blood agar. Mannose resistance and sensitive haemagglutination and serum resistance were determined by standard methods. ESBL and MBL were detected by double disc diffusion method along with conventional antibiogram.
Result: Fifty E.coli were isolated from 100 urine sample in this study. Among these 30% showing haemolytic properties, 48% showing HA and 16% showing serum resistance. Three different methods of bio-film formation were evaluated. Antibiogram was plotted with MDR.
Conclusion: There is a need of periodic survillence, antibiotic policy, careful use of empirical and target antibiotics, use of antibiotic coated catheter, standard guidelines on care of catheter. This will reduce incidence, chronicity and recurrence of Urinary Tract Infections.
Keywords
Urinary Tract Infection, Bio-Flim, Virulence Factors, Drug Resistance, Antibiotic Policy.- Prevalence and Seasonal Occurrence of Intestinal Helminth Communities in Indian Major Carps in the Freshwaters of West Bengal
Authors
1 Department of Fishery Pathology and Microbiology, F. F. Sc, WBUAFS-741 252, IN
Source
Journal of Environment and Sociobiology, Vol 1, No 1-2 (2004), Pagination: 21-28Abstract
A total of 878 numbers of Indian major carps were investigated for studying the diversity of intestinal helminth parasites for a period of 1 year. The study revealed the presence of four different groups of helminthes, such as, digeneans, nematodes, cestodes and acanthocephalans. Among these groups nematodes dominate over others. L rohita was found to be infected more compared to other species of carps. Monsoon season was found to be congenial for proliferation of these parasites.Keywords
Parasitic Frequency Index, Seasonal Cycle, Intermediate Host.References
- Awachie, J. B. E. 1966. The development and life history of Echinorhynchus truttae Schrank, 1788 (Acanthocephala). J. HelminthoL, 40 : 11-32.
- Chappell, L. H. 1969. The parasites of the three spined Stickleback Gasterosteus aculeatus L. from a Yorkshire pond. H. Variation of the parasite fauna with sex and size of fish. J. Fish. Biol., I : 339,347.
- Eure, H. 1976, Seasonal abundance of Neoechinorhynchus cylindratus taken from large mouth bass {Micropterus salmonides) in a heated reservoir. ParasitoL, 73 : 355-370.
- Hynes, H. B. N. 1950. The food of fresh water Sticklebacks (Gasterostaus aculeatus and Pygosteus pungitius) with a review of methods used in studies of food fishes. J. Anim. EcoL, 19 : 36-58.
- Kennedy, C. R. 1990. Helminth communities in fresh water fish : Structural communities or stochastic assemblages? In : Parasitic communities : Patterns and process. (Esch, G. W., Bush, A. O. and Aho, J. M. eds) pp. 130-156. London : Chapman and Hall.
- Kennedy, C. R. 1993. The dynamics of helminth communities in eels Anguilla anguilla in a small stream : Long term changes in richness and structure. ParasitoL, 107 : 71-78.
- Kennedy, C. R. 1995. Richness and diversity of macro parasite communities in tropical eels A. reinhardtii in Queensland, Australia. ParasitoL, 111 : 233-245.
- Kim, K. H., Ahm, K. J. and Kim, C. S. 2001. Seasonal abundance of Prosomicrocotyla gotoi (Monogenea) and Opecoelus sphaericus (Digenea) from greenlings Hexagrammos otakii in a Southern coastal area in Korea. Aquacult., 192 : 147-153.
- Nie, P. 1996. Communities of intestinal helminthes of carp, C. carpio, in highland lake in Yunnan province of South west China. Acta. ParasitoL, 40 : 148-151.
- Pennycuick, L. 1971. Seasonal variations in the parasite infections in a population of three spined Sticklebacks, Gasterosteus aculeatus L. ParasitoL, 63 : 373-388.
- Soota, T. D. 1980. Collection and preservation of trematodes and cestodes. Proc. workshop Tech. ParasitoL ZooL Surv. India, pp. 27-29.
- Srivastava, C. B. 1980. Estimation of helminthic infections. Proc. Workshop Tech. ParasitoL ZooL Surv. India, pp. 29-31.
- Thomas, J. D. 1964. A comparison between the helminth burdens of male and female brown trout, Salmo trutta L., from a natural population in the river Teify, west Wales. ParasitoL, 54 : 263-272.
- Tweb, A. and Ahmed, A. 1981. Helminth infection in freshwater fishes of Bangladesh. FishpathoL, 15(3/4) : 229-236.
- Walkey, 1967. The ecology of Neochinorhynchus rutili (Muller). /. ParasitoL, 53 : 263-272
- Prevalence of Nematodes with Zoonotic Potential in Indian Major Carps in the Freshwaters of West Bengal
Authors
1 Department of Fishery Pathology and Microbiology, F.F.Sc, WBUAFS-741 252, IN
Source
Journal of Environment and Sociobiology, Vol 1, No 1-2 (2004), Pagination: 55-60Abstract
A total of 296 Indian major carps (IMC) were examined for nematode infestation for a period between January, 2004 and December, 2004. Catia catla showed highest infestation followed by Lxiheo rohita and the least prevalence was observed in Cirrhinus mrigala. Rainy season showed highest occurrence of nematode infestation. The chance of an IMC to get infected by nematodes having zoonotic potential was very less.Keywords
Parasitic Frequency Index, Seasonal Cycle, Zoonotic Potential.- Multi COB-Bearing Popcorn (Puakzo) Maize:A Unique Landrace of Mizoram, North East, India
Authors
1 Division of Crop Protection, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 Division of Social Science, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
3 Division of Horticulture, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
4 Division of Natural Resource Management, ICAR-Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
Source
Current Science, Vol 110, No 8 (2016), Pagination: 1392-1393Abstract
Mizoram is a mountainous (Lushai hill range) state with closely spaced intermountain valleys, demographically dominated by indigenous tribes (Mizo) constituting 94.4% of the total population. These tribal populations ensure the conservation of plant genetic resources for the future, for the food and nutritional security of an increasing population. Since 1976, in the northeastern hill region intensive collections of maize landraces were made by ICAR-NBPGR, New Delhi and diversity of landraces maize from this region comprised 36% of the total collection from whole India, which was the highest number of accession among other regions.- Variability for Functional and Nutritional Quality Traits in Sweet Pepper (Capsicum annuum L.)
Authors
1 Vivekananda Parvatiya Krishi Anusandhan Sansthan, Almora - 263 601, IN
Source
Journal of Horticultural Sciences, Vol 8, No 2 (2013), Pagination: 181-186Abstract
Natural biodiversity for functional and nutritional quality traits is of prime importance in breeding programmes for developing nutritionally rich genotypes. The present investigation was carried out to identify lines of sweet pepper with high ascorbic acid content and important mineral nutrients like potassium, phosphorus, zinc, copper, iron and manganese. Forty accessions of sweet pepper (Capsicum annuum L.) were analyzed for their functional and nutritional composition. Wide variation was observed in functional quality traits like ascorbic acid content (22-129mg 100g-1), and β-Carotene (0.39-1.0mg 100g-1) suggesting a considerable level of genetic diversity. Wide variability was also noticed for nutritional composition (K, P, Zn, Cu, Fe&Mn) in the tested lines. Across accessions, concentration of ascorbic acid was negatively correlated with copper content (r = -0.293, p < 0.05) being significantly greater in two accessions, VHC 34 and VHC 37 (129 and 118.0 mg100g-1, respectively) compared to other accessions. β-Carotene concentration was higher (0.85 to 0.99mg 100g-1) in six accessions, and lower (0.39 to 0.54mg 100g-1) in twenty four accessions. Greater variability present for quality traits holds an immense potential to help develop Capsicum lines with traits of high functional and nutritional quality. Therefore, this information is potentially useful in sweet pepper breeding programmes in the future.Keywords
Sweet Pepper, Variability, Correlation, Nutritional Quality.- Design and Evaluation of Ranitidine Hydrochloride Floating Tablets for Oral Controlled Release
Authors
1 GRY institute of Pharmacy, Vidhya Vihar, Borawan, M.P, IN
2 Girijanada Chowdhury Institute of Pharmaceutical Science, Azara Hathakhowapara, NH-37, Guwahati 781017, Assam, IN
3 Department of Pharmaceutics, GRY institute of Pharmacy, Vidhya Vihar, Borawan, M.P, IN
Source
Research Journal of Pharmaceutical Dosage Form and Technology, Vol 1, No 2 (2009), Pagination: 167-170Abstract
The purpose of the study was to develop a floating control drug delivery system of ranitidine hydrochloride and investigate the effect of formulation variables on drug release profile and floating property. Ranitidine hydrochloride (RHCl) was used as a model drug because of its short biological half life and site of release at stomach. Tablets were formulated using different concentration hydroxypropyl methyl cellulose K4M, carbopol 934.where Sodium bicarbonate and Citric acid used as a gas generating agent. The floating behavior and in-vitro dissolution studies are carried out in a USP type II apparatus in 0.1 (N) HCL. It was observed that all the prepared formulation shows good floating capabilities up to 15 to 18 hours and slow steady release profile up to 12 hours. The dissolution profiles were subjected various kinetic release equations and found that drug release from different polymeric matrix follows diffusion controlled process. It has been also observed that combination of HPMC K4M and carbopol 934 shows better results as compared to their single use.Keywords
Floating Controlled Delivery System, Ranitidine Hydrochloride, Hydroxypropyl Methylcellulose K4 M, Carbopol-934.- Study on Influence of Welding Parameters on Hardness of Welds in Submerged Arc Butt Welding
Authors
1 B.E. College (D.U.), How-3, IN
2 B.E. College (D.U.), Howrah-711103, IN
Source
Journal of the Association of Engineers, India, Vol 72, No 1-4 (2002), Pagination: 3-8Abstract
In the present investigation an attempt has been made to study the effects of welding parameters on hardness of weld deposited by submerged arc welding.
Hardness of the welds have been studied with respect to the variation in welding voltage, current and speed.
It has been found that for a definite combination of the welding parameters maximum hardness is achievable.
- B.E. to M.B.A.:Bridging the Gap Safely
Authors
1 School of Mngt., Pandicherry University - 695 014, IN
Source
Journal of Engineering Education Transformations, Vol 5, No 1 (1991), Pagination: 1-6Abstract
In view of the large number of Engineers opting for MBA courses, this paper has attempted to reduce the incompatibility in their expectations and their performances.- Effect of In-Feed on Vibration Behaviour of Cylindrical Grinding Machine
Authors
1 Mechanical Engineering Department, Jadavpur University, Kolkata-700032, IN
Source
Manufacturing Technology Today, Vol 4, No 1 (2005), Pagination: 3-6Abstract
To achieve higher productivity, improved accuracy and to keep pace with rapid advancement in technology and manufacturing systems it is not enough to design the machine tool from static consideration only but the dynamic behaviour of the machine tool should also be taken into consideration appropriately. The relative vibratory movement between cutting tool and the work piece effects unsatisfactory performance of the machining process. Like in any other machine tools, vibration in cylindrical grinding machine is supposedly Influenced by parameters of the process, which has not been investigated so far to a fair extent. In the present work some aspects of dynamic performance of cylindrical grinding machine have been experimented, and results thereof analyzed, with special emphasis on parameter: in-feed.- Meta-Analysis of Classical Swine Fever Prevalence in Pigs in India:A 5-Year Study
Authors
1 Indian Council of Agricultural Research - National Institute of Veterinary Epidemiology and Disease Informatics (ICARNIVEDI), PBNO-6450, Yelahanka, Bengaluru, Karnataka, IN
Source
Veterinary World, Vol 11, No 3 (2018), Pagination: 297-303Abstract
Aim: The aim of the study was to determine the overall prevalence of classical swine fever (CSF) in pigs in India, through a systematic review and meta-analysis of published data.
Materials and Methods: Consortium for e-Resources in Agriculture, India, Google Scholar, PubMed, annual reports of All India Coordinated Research Project on Animal Disease Monitoring and Surveillance,and All India Animal Disease database of NIVEDI (NADRES) were used for searching and retrieval of CSF prevalence data (seroprevalence, virus antigen, and virus nucleic acid detection) in India using a search strategy combining keywords and related database-specific subject terms from January 2011 to December 2015 in English only.
Results: A total of 22 data reports containing 6,158 samples size from 18 states of India were used for the quantitative synthesis, and overall 37% (95% confidence interval [CI]=0.24, 0.51) CSF prevalence in India was estimated. The data were classified into 4 different geographical zones of the country: 20% (95% CI=0.05, 0.55), 31% (95% CI=0.18, 0.47), 55% (95% CI=0.32, 0.76), and 34% (95% CI=0.14, 0.62). CSF prevalence was estimated in northern, eastern, western, and southern regions, respectively.
Conclusion: This study indicates that overall prevalence of CSF in India is much lower than individual published reports.
Keywords
Classical Swine Fever, India, Meta-Analysis, Pigs, Prevalence.- Occurrence, Severity and Association of Fungal Pathogen, Botrydiplodia theobromae with Sudden Death or Decline of Tree Bean (Parkia timoriana, (DC.) Merr) in North Eastern India
Authors
1 ICAR Research Complex for NEH Region, Mizoram Centre, Kolasib 796 081, IN
2 ICAR Research Complex for NEH Region, Manipur Centre, Lamphelphat 795 004, IN
Source
Current Science, Vol 115, No 6 (2018), Pagination: 1133-1142Abstract
Tree bean, Parkia timoriana is one of the most important perennial tree legume vegetable crops in north eastern region (NER) of India. Recently, sudden death or decline is emerging as a major constraint in the production of tree bean. The prevalence, intensity and etiology of this disease have not been extensively studied. The present work was aimed at studying the symptomology, severity and etiology of sudden death or decline of tree bean in the north eastern region of India. Typical symptoms of tree bean decline were initiated with wilting of half portion of the tree, excessive shedding of leaves, gradual drying up leading to death, and secondary infestation by insects on dead trees. The highest disease severity of 68.5% was observed in warmer regions like Kolasib, Mizoram. During survey, small bark borer was recorded in all districts and levels of infestation rate (holes/ft2 of log) reached maximum up to 25.49 in Hnanthial of Lunglei district. Young trees in the range 1–10 years with 57.32% (917 trees) of total trees (1600) infected were most susceptible to the disease compared to 12.58% (201 trees) infection in old trees in the range 21–30 years. The frequently associated pathogen with sudden death or decline of tree bean was identified as Botrydiplodia theobromae at the Indian Type Culture Collection, ICAR-IARI, New Delhi. It was the most aggressive species and proven to be pathogenic to tree bean following artificial inoculation.Keywords
Botrydiplodia theobromae, North Eastern India, Parkia timoriana, Sudden Death or Decline Disease, Tree Bean.References
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- Terotechnological Aspects of Solar Hot Water Systems:A Review
Authors
1 Department of Mechanical Engineering, B. E. College, Howrah - 711103, IN
2 Department of Mechanical Engineering, Jadavpur University, Calcutta - 700032, IN
Source
Journal of the Association of Engineers, India, Vol 64, No Spl (1988), Pagination: 93-97Abstract
A terotechnological approach to the analysis of any system is a cost effective performance evaluation over the life-cycle of the system. Thus it considers (I) the initial capital cost, (ii) the operating, maintenance, and repair costs, and (iii) the worth of lost production due to breakdown, frequent maintenance, and substandard performance. In a solar hot water system, the fuel cost being nil, an appropriate terotechnological approach would naturally emphasise on the selection of proper materials. Installation procedure, and maintenance schedule such that the system functions at its rated capacity during its design-life would not be affected by external environmental factors. It is attempted here to consider the different sub' systems and components, the initial and future costs, system sizing, installation procedure and maintenance schedule of a solar hot water system to achieve optimum life-cycle cost of the systemReferences
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