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345 articles for “Quantification”
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Yield Gaps Among Hybrid Head Cabbage (Brassica oleraceae var. capitatal) Varieties
Abstract: An experiment was conducted to quantify the impacts of selected hybrid head cabbage (Brassica capitata var. L.) varieties on the yield and quality traits. Three hybrid head cabbage varieties; K-500, Landini and Bandung were tested. The experiment was laid out in Factorial Randomized Complete Block Design with three replications. Head weight, head diameter, marketable yield, total head yield and gross head yield at (P<0.05) were significantly affected by the variety.The …
Published in Research & Reviews : Journal of Botany · Vol. 9, Issue 3, 2020 · pp. 1–7 Read article
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Variation in Persistent Organochlorine Pesticide Residues among Various Tissues of House Sparrow, Passer domesticus, from Tamil Nadu, India, during 2001–2006
Abstract: ABSTRACTThe present study focuses on persistent organochlorine pesticides (OCPs) on various tissues of house sparrow, Passer domesticus, from Tamil Nadu, India, between 2001 and 2006. The major compounds quantified in eggs, liver, brain and muscle tissues are hexachlorocyclohexane (HCH), 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p’-DDE), dichloro-diphenyl-trichloroethane (ΣDDT), dieldrin, and heptachlor epoxide. The mean concentrations of ΣPCBs, ΣHCH and ΣDDT in eggs are 0.94 ± 0.66 μg/g and 0.35 ± 0.26 μg/g respectively on wet …
Published in Research & Reviews : Journal of Ecology · Vol. 1, Issue 3, 2012 · pp. 8–16 Read article
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Studies on Effect of Varying Geometric Parameters of Solar Receiver Tube on Thermal Loss Suffered By It
Abstract: AbstractThe radiative and convective heat losses from a solar receiver tube at a given operating temperature are a function of temperature of the outer glass envelope and outer surface area of the glass envelope. But the temperature of the outer glass envelope and its outer surface area are themselves a function of outer diameter of the heat pipe enclosed within the glass envelope and the annular gap between the outer …
Published in Research & Reviews : Journal of Physics · Vol. 4, Issue 1, 2015 · pp. 10–21 Read article
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Precipitation Trend Analysis by MK Test in Garhwal Region Districts of Uttarakhand (1901–2010)
Abstract: Climate change has disrupted the major climatic parameters at a global level. However, the changes having localized intensity are not equal for all regions especially in India. These changes must be quantified locally to manage the natural water resources more effectively. Precipitation is one of the most important climatic parameters. It has been widely measured as a starting point towards the apprehension of global climate change. The purpose of this …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 4, Issue 3, 2015 · pp. 25–35 Read article
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Land Surface Temperature Analysis in an Urbanising Landscape through Multi-Resolution Data
Abstract: Rapid changes in the land use and land cover of a region have become a major environmental concern in recent times. This has lead to unsustainable development with the reduction of green spaces and also changes in local climate and formation of urban heat islands (UHIs). Monitoring and management of land use dynamics would help in land use planning and mitigation of environmental impacts.The main goal of this paper is …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 1, Issue 1-3, 2012 · pp. 12–21 Read article
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On the Contribution of E- and D-Layer to Weak Geomagnetic Storm Events in South Africa
Abstract: Data from five ionosonde in Southern Africa have been analyzed to better appreciate the contributions of the E- and D-layers of the ionosphere in this region to weak geomagnetic storms. This attempt to quantify the exact contributions of the D and E-layers to weak geomagnetic storms during period of relatively quiet Sun has never been done in this region before. The results suggest that the E-layers contribute more than the …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 1, Issue 1-3, 2012 · pp. 42–55 Read article
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Laser stimulated downward combustion propagation phenomenon
Abstract: Enhanced energy requirement has necessitated active research efforts to understand combustion behaviour in presence of alternative energy sources. In the last five decades, emphasis on combustion focuses on two aspects viz., improving quality of combustion and addressing the risks/hazards. With recent advancement, an aspect which is researched upon is the combustion behaviour in the presence of laser flow. Their applications pertain to propulsion, energy generation, artillery, fire safety and defence …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 9, Issue 1, 2020 · pp. 32–43 Read article
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Understanding Geomagnetic Storms Through ACE/EPAM Data in the Recent Solar Cycle
Abstract: We share our research on the effects of geomagnetic storms on Earth's climate throughout the solar cycle. We use the Kp index value from ACE and several other observatories to comprehend the impact of the geomagnetic storm in this instance. A geomagnetic storm is indicated by a value of 5 or higher on the K-index, which uses an integer between 0 and 9 to quantify disturbances in the horizontal component …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 12, Issue 2, 2023 · pp. 35–42 Read article
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Development and Validation of Simple UV-Spectrophotometric Method of Quantization of Domperidone in Solid Dosage Formulation using Mixed Solvency Concept
Abstract: Organic solvents are most frequently employed in spectrophotometric analyses. They may be the sources of pollution. Some of them may be toxic, while others may be costlier. Volatility may be a source of inaccuracy in spectrophotometric estimations. In the present investigation, it was proposed to solubilize Domperidone by the use of mixed solvency concept. Domperidone shows maximum absorbance in the concentrations range of 10–50µg/ml at 287 nm. Method of analyses …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 4, Issue 2, 2017 · pp. 19–23 Read article
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Assessment and In Vitro Studies of Potent Amylase Inhibitor from Different Plant Species
Abstract: Flavonoids are naturally occurring compounds widely distributed in plants, which have hypoglycemic potential. Amylase inhibitors belong to flavonoids that block amylases which are involved in hydrolyzing the carbohydrates to yield low molecular weight dextrin and sugars. Inhibition of α-amylase along with α-glucosidase can significantly reduce the post-prandial increase of blood glucose and can be an important strategy in the control of blood glucose level in the type-2 diabetic patients. In …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 5, Issue 2, 2018 · pp. 1–6 Read article
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Advance in Spatial Statistics for Environmental Data Analysis
Abstract: Recent advancements in spatial statistics have significantly enhanced the analysis of environmental data, addressing complex spatial dependencies and offering robust methodologies for environmental monitoring, modeling, and decision-making. This abstract highlights key developments in the field, emphasizing their applications and impact. Geostatistical Methods, Improved geostatistical techniques, such as kriging and co-kriging, provide more accurate predictions of environmental variables by incorporating spatial correlation structures. Advanced kriging variants, including Bayesian kriging and machine …
Published in Research & Reviews : Journal of Statistics · Vol. 12, Issue 3, 2023 · pp. 35–39 Read article
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Phyto-Chemical Screening and Quantitative Analysis of Certain Secondary Metabolites of Madhuca indica J. F. Gmel. Leaves used by the Ethnic Communities of Jharkhand State for the Treatment of Different Ailments
Abstract: Plants of Madhuca indica J. F. Gmel., popularly known as “Mahua” is an Indian tropical tree found in abundance in plains and forests of Jharkhand state. Recently, various development and anthropogenic activities have resulted in depletion of forest area on one hand and migration of forest dwellers, mostly tribals, to urban area on the other in search of job. If this continues unabated there are all possibilities of losing valuable …
Published in Research & Reviews: A Journal of Pharmacognosy · Vol. 5, Issue 2, 2018 · pp. 10–14 Read article
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Development and Validation of a Gradient RP-HPLC Method for Quantitative Determination of Potential Manufacturing Impurities in New Drug Apronalide and Pharmaceutical Formulations
Abstract: Three impurities in apronalide drug substance were detected and quantified using a simple isocratic reverse phase HPLC method. The chromatographic separation was achieved on a Thermo Hypersil gold-CN, 100 A0 5 µm, and 250X4.6 mm using a mobile phase consisting of phosphate buffer (pH-4.6) - Methanol with UV detection at 210 nm and flow rate of 0.8 ml/min. The column temperature was maintained at 250C throughout the analysis. This method …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 1, Issue 1, 2014 · pp. 1–10 Read article
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Development and Validation of RP-HPLC Method for Determination of Thermal Degradation Impurity in Macrolide Immunosuppressant Substance and Drug Product
Abstract: The present study describes a simple and stability-indicating reverse phase high-performance liquid chromatography (RP-HPLC) method for the quantification of the thermal degradation impurities of Tacrolimus (FK506) namely Ally ester rearrangement impurity (Impurity R) in Tacrolimus capsules and drug substances. Successful separation of impurity R from Tacrolimus, its other related substances and its tautomers were achieved on a Zorbax XDB C8 (150×4.6 mm, 5 μm) and detector of UV at 210 …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 3, Issue 1, 2016 · pp. 14–19 Read article
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Analytical Method Development and Validation for Simultaneous Estimation of Linagliptin and Empagliflozin by using RP-HPLC–PDA
Abstract: Present my research work done for the measurement and quantification of Linagliptin and Empagliflozin, a rapid, sensitive, and Reliable RP-HPLC technique using a Waters HPLC System with PDA detection was designed and validated. Chromatography was carried out on an Thermo-ODS C18 (150 ×x 4.6 mm, 5) column with a Flow rate of 1.0 ml/min and an effluent of 223 nm using filtered and mixed Degassed potassium dihydrogen phosphate and Methanol: …
Published in Research & Reviews: A Journal of Drug Design & Discovery · Vol. 8, Issue 3, 2023 · pp. 28–51 Read article
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Validation of Wet and Dry Drug Collection Principle in the Preparation of Shatavari Ghrita through Quantitative Estimation of Shatavarin IV
Abstract: Background: Ayurved classics accentuates wet and dry drug collection principle i.e. wet state of drugs should be taken in double quantity to the quantity of dry drugs during the preparation of any formulation. But some Acharya has given the exceptional drugs for this principle where those drugs should be taken always in wet state with mentioned quantity. Shatavari is one of exceptional drug for this principle. Aim: The present study …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 8, Issue 2, 2023 · pp. 28–41 Read article
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Simple, Direct and Stability-Indicating UV Spectrophotometric Assay of Pioglitazone Hydrochloride in Pharmaceuticals
Abstract: Pioglitazone hydrochloride (PGH) is an antihyperglycemic agent used in the treatment of type-2 diabetes mellitus. A simple and straight forward UV-spectrophotometric method is presented for the determination of PGH in bulk drug and tablets by measuring the absorbance of drug solution in 0.1M H2SO4 at 269 nm. A plot of absorbance versus concentration obeyed Beer’s law over 2–36 µg ml-1 concentration range (r = 0.9981) with a molar absorptivity of …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 8, Issue 3, 2017 · pp. 7–16 Read article
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Determination of the Antidiabetic Drug Miglitol in Pharmaceuticals by Ultra-Performance Liquid Chromatography
Abstract: Miglitol (MGL) is a drug used in the treatment of type-2 diabetes mellitus. A new analytical method employing ultra-performance liquid chromatography (UPLC) with UV-detection is presented for the determination of MGL in bulk drug and tablet forms. Analysis was performed in less than 3 min in isocratic mode on a reversed phase BEH C18 (100 mm × 2.1 mm; 1.7 µm particle size) column using phosphate buffer of pH 3.7-acetonitrile …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 9, Issue 2, 2018 · pp. 11–26 Read article
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Development and Validation of Liquid Chromatography-Tandem Mass Spectrometric Method for Assay of Zidovudine in Human UrineDevelopment and Validation of Liquid Chromatography-Tandem Mass Spectrometric Method for Assay of Zidovudine in Human Urine
Abstract: A sensitive and selective liquid chromatographic-tandem mass spectrometric (LC-MS-MS) method was developed to determine zidovudine (ZDV) in human urine. After solid-phase extraction with SPE cartridge, the urine sample was analyzed on a C18 column (Symmetry 3.5 µm; 75×4.6 mm i.d) interfaced with a triple quadrupole tandem mass spectrometer. Positive electrospray ionization was employed as the ionization source. The mobile phase consisted of water-acetonitrile (20:80, v/v).The method was linear over a …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 5, Issue 3, 2014 · pp. 17–23 Read article
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Quantitative Determination of Isomeric Components of essential oils by RP-HPLC-PDA in multi-herbal tablets
Abstract: Essential oils are lipophilic and highly volatile secondary plant metabolites, principally mono- and sesquiterpenes. The widespread usage and applications in biopharmaceutics and cosmoceutics of these components drives their quality assessments criteria to be established. Gas chromatography is one of the predominantly used technique for analyzing volatile oils. Although Gas Chromatography employs estimation designs operated at elevated temperatures leading for plausible structural alterations of thermo labile compounds. Hence, a novel gradient …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 11, Issue 3, 2020 · pp. 19–28 Read article