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Chinese Chemical Letters 2017年第2期28卷 312-318页

作者： Savan M.darjee Keyur d.bhatt Urvi S.Panchal Vinod K.Jain department of Chemistry School of Sciences Gujarat University Ahmedabad 380009 India department of Chemistry C.U. Shah University Wadhwan 363030 India

Water dispersible silver nanoparticles（AgNps） were prepared using thiacalix[4]arene tetrahydrazide（TCTH） as a reducing and stabilizing ***-AgNps were characterized by surface plasmon resonance（SPR）,transmission electron microscopy（TEM） and energy dispersive X-ray（EdX）.Relatively uniform 20 nm spherical particles of TCTH-AgNps were efficiently formed over a pH range of 5-9 and from 10-40 ℃.The interaction behavior of TCTH-AgNps with different amino acids was investigated using spectrophotometry and *** the amino acids tested,only tryptophan and histidine showed fluorescence quenching and fluorescence enhancement,*** linear detection range by Stern-Volmer plot was 5 nmol/L to 0.48 μmol/L for tryptophan and 4 nmol/L to 0.54 μmol/L for ***-AgNps were able to effectively reduce the levels of gram-positive bacteria,gram-negative bacteria,and *** properties argue for the potential use of TCTH-AgNps as detectors of histidine and tryptophan and as antibiotics.

关键词： Silver nanoparticles Fluorescent sensor Colorimetric sensor Thiacalixarene

Characterization of Agro-diversity by Seed Storage Protein Electrophoresis:Focus on Rice Germplasm from Uttarakhand Himalaya,India

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Rice science 2010年第2期17卷 122-128页

作者： Arun JUGRAN indr. d.bhatt Ranbeer S.RAWAL G.B.Pant Institute of Himalayan Environment and development Kosi-Katarmal

The characteristics of 48 rice varieties from Uttarakhand Himalaya, India were detected by morphological and biochemical markers. The grains of the selected rice varieties varied in their morphological （grain length, grain width and grain weight） and biochemical characters （sodium dodecyl sulfate polyacrylamide gel electrophoresis, SdS-PAGE）. Based on the presence of 70, 65, 60, 57, 37-39, 22-23, 13 and 10 kda protein bands in the 48 rice varieties, seven types of profiles were identified. An unweighted pair group average method with arithmetic mean （UPGMA） dendrogram based on cluster analysis of genetic similarity of the protein bands showed two distinct groups with 1%-78% similarity coefficients. The presence of characteristic bands in selected varieties is a useful parameter for identification of rice germplasm.

关键词： rice seed storage protein sodium dodecyl sulfate polyacrylamide gel electrophoresis genetic diversity polymorphism varietal identification

Efficacy of a diabetes Specific Nutritional Supplement (dSNS) on Glycemic Response in Prediabetic Adults: A Two-Armed, Open-Labelled Randomized Controlled Study

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Food and Nutrition Sciences 2024年第7期15卷 612-643页

作者： deepti Khanna Kejal Joshi Reddy Hema S. Gopalan Jaladhi bhatt Jayanti Gupta Simran Sethi Parth Joshi Manoj Pareek department of R&d Hindustan Unilever Limited Gurugram India Mumbai India Cliantha Research Ahmedabad India

It is well known that diabetes Specific Nutritional Supplements (dSNSs) are linked to improved glycemic control in individuals with diabetes. However, data on efficacy of dSNSs in prediabetics is limited. This was a two-armed, open-labelled, randomized controlled six-week study on 199 prediabetics [30 - 65 years;Glycosylated Hemoglobin (HbA1c) 5.7% - 6.4% and/or Fasting Blood Glucose (FBG) 100-125 mg/dl]. Two parallel phases were conducted: Acute Blood Glucose Response (ABGR) and Intervention phase. Prediabetic participants were randomized into test (n = 100) and control (n = 99). The primary objective was to assess the ABGR of dSNS versus an isocaloric snack, measured by incremental Area under the Curve (iAUC). Test and control received 60 g of dSNS and 56 g of isocaloric snack (cornflakes) respectively, both in 250 ml double-toned milk on visit days 1, 15, 29 and 43. Postprandial Blood Glucose (PPG) was estimated at 30, 60, 90, 120, 150 and 180 minutes. during the 4 weeks intervention phase, the test group received dSNS with lifestyle counselling (dSNS + LC) and was compared with the control receiving lifestyle counselling alone (LC alone). Impact was studied on FBG, HbA1C, anthropometry, body composition, blood pressure, nutrient intake, and physical activity. The impact of dSNS was also studied using CGM between two 14-day phases: CGM1 baseline (days 1 - 14) and CGM2 endline (days 28 - 42). dSNS showed significantly lower PPG versus isocaloric snack at 30 (p 12, and chromium were reported by dSNS + LC versus LC alone. No other significant changes were reported between groups. It may be concluded that dSNS may be considered as a snack for prediabetic or hyperglycemic individuals requiring nutritional support for improved glycemic control.

关键词： diabetes Specific Nutritional Supplement Prediabetes Acute Blood Glucose Response Incremental Area under Curve Lifestyle Counselling

Efficacy of a diabetes Specific Nutrition Supplement on Glycemic, Anthropometric, dietary and Gut Health Markers in Adults with Type 2 diabetes: An RCT

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Food and Nutrition Sciences 2024年第8期15卷 846-867页

作者： deepti Khanna Hema S. Gopalan Kuzhandaivelu Abirami Vasudevan Sudha Rajagopal Gayatri Kejal Joshi-Reddy Jaladhi bhatt Raman Ganesh Jeevan Karthikeyan Parkavi Vadivel deepika Manoj Pareek Ranjit Mohan Anjana Viswanathan Mohan R&d department Hindustan Unilever Limited Gurugram India department of Foods Nutrition & Dietetics Research Madras Diabetes Research Foundation Chennai India department of diabetology Dr. Mohans Diabetes Specialities Centre Chennai India

With increasing incidence of diabetes, use of diabetes specific nutrition supplements (dSNS) is common for better management of the disease. To study effect of 12-week dSNS supplementation on glycemic markers, anthropometry, lipid profile, SCFAs, and gut microbiome in individuals with diabetes. Markers studied were glycemic [Fasting Blood Glucose (FBG), Post Prandial Glucose (PPG), HbA1c, Incremental Area under curve (iAUC), Mean Amplitude of Glycemic Excursions (MAGE), Time in/above Range (TIR/TAR)], anthropometry [weight, Body Mass Index (BMI), waist circumference (WC)], lipid profile, diet and gut health [plasma short chain fatty acids (SCFAs)]. N = 210 adults were randomized to receive either dSNS with standard care (dSNS + SC;n = 105) or standard care alone (SC alone;n = 105). After 12 weeks, significant differences between dSNS + SC versus SC alone was observed in FBG [−3 ± 6 vs 14 ± 6 mg/dl;p = 0.03], PPG [−35 ± 9 vs −3 ± 9 mg/dl;p = 0.01], weight [−0.6 ± 0.1 vs 0.2 ± 0.1 kg;p = 0.0001], BMI [−0.3 ± 0.1 vs 0.1 ± 0.1 kg/m2;p = 0.0001] and WC [−0.3 ± 0.2 vs 0.2 ± 0.2 cm;p = 0.01]. HbA1C and low-density lipoprotein (LdL) were significantly reduced in dSNS + SC [−0.2 ± 0.9;p = 0.04 and −5 mg/dl;p = 0.03] respectively with no change in control. Continuous Glucose Monitoring (CGM) reported significant differences between dSNS + SC versus SC alone for mean glucose [−12 ± 65 vs 28 ± 93 mg/dl;p dl;p = 0.04], TAR 250 [−3 ± 27 vs 9 ± 38 mg/dl;p = 0.05], iAUC [−192 (1.1) vs −48 (1.1) mg/dl;p = 0.03]. MAGE was significantly reduced for both dSNS + SC (−19 ± 67;p d SC alone (−8 ± 70;p = 0.04), with reduction being more pronounced for dSNS + SC. dSNS + SC reported a decrease in carbohydrate energy % [−9.4 (−11.3, −7.6) %;p d amount [−47.4 (−67.1, −27.7) g;p d dietary fiber [9.5 (7.2, 11.8) g;p d protein energy % [0.9 (0.5, 1.3) %;p dSNS + SC reported signi

关键词： diabetes Specific Nutrition Supplement Standard of Care diabetes Glycemic Markers HbA1C

Carbon disulphide Induced Sensitivity Changes of Rat Anococcygeus Muscle to Noradrenaline(NA)

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Biomedical and Environmental Sciences 1993年第3期6卷 223-230页

作者： d.N.GANdHI H.VENKATAKRISHNA-bhatt department Department of Neurobehavioural Toxicology National Institute of Occupational Health(ICMRMeghani NagarAhmedabad 380016Indiaof Neurobehavioural Toxicology National Institute of Occupational Health(ICMRMeghani NagarAhmedabad 380016India

The sensitivity of rat anococcygeus muscle to noradrenaline (NA) was reduced following carbon disulphide (CS2) pretreatment. Preparations incubated in excess Ca++ (4.2 mrnol-L-1) or Zero Ca++ (***-L-1) media showed decrease in sensitivity to NA. Reserpinization failed to induce supersensitivity to NA in any Mg+ + concentration in the media. Reserpinized tissue in Mg++ free media with EdTA showed increased sensitivity while decreased sensitivity and maximum response to NA in Mg+ + (1.2 mmol-L-1) and excess Mg+ + (3.6mmol-1 ') concentration of the medium. In the presence of EdTA, the inhibition observed with CS2 in excess Mg+ + (3.6m mol-L-1') medium was comparatively much less in both non-reserpinized and reserpinized preparations. In normal Ca++ and its deficient medium decrease in sensitivity to CS2 and the relevant maximum response to NA were observed. In excess Ca + +, the CS2 effect depressed corresponding to its maximal response to NA. Thus CS2 may be inhibiting responses to NA by interfering with Ca+ + utilization.

关键词：工业溶剂二硫化碳 CS2 大鼠肛尾肌肉去甲肾上腺素痉挛反应敏感性变化慢性毒性

Variation in Polyphenolics and Antioxidant Activity of Traditional Apple Cultivars from West Himalaya,Uttarakhand

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Horticultural Plant Journal 2018年第4期4卷 151-157页

作者： BAHUKHANdI Amit dHYANI Praveen bhatt indr. d. RAWAL Ranbeer S. G.B.Pant National Institute of Himalayan Environment and Sustainable development Almora 263643UttarakhandIndia

Apple(Malus × domestica) is largely known for polyphenolic and antioxidant properties; however, systematic investigation in the apple growing in the Indian Himalayan region is not carried out. The present study therefore, attempts to quantify polyphenolics and antioxidant activities in three traditional apple cultivars namely 'Benoni', 'Fanny' and 'Rymer' growing at different locations of Uttarakhand(west Himalaya), *** revealed that phenolic(0.94–7.00 mg GAE·g^(-1)FW), flavonoid(1.02–9.86 mg QE·g^(-1)FW), flavonol(0.77–6.92 mg CE·g^(-1) FW), tannin(15.49–37.99 mg TAE·g^(-1) FW) and antioxidant activity(ABTS, 3.10–67.36; dPPH, 4.99–14.06; FRAP, 4.70–39.21 mmol AAE·kg^(-1)FW) varied significantly among the cultivars and maximum content was recorded in Rymer fruits of Mukhwa location. Altitude showed significant(P d(r = 0.843), flavonol(r = 0.812), ABTS(r = 0.856) and FRAP activity(r = 0.830). Based on the results, it is concluded that among three cultivars, Rymer is one of the most promising sources of polyphenolic content and antioxidant activity and therefore, recommended for mass plantation at suitable locations in Uttarakhand for harnessing maximum potential.

关键词： apple traditional cultivar antioxidant polyphenolics West Himalaya

A catalyst-free new polyol method synthesized hot-pressed Cu-doped Bi2S3 nanorods and their thermoelectric properties

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Nano Research 2016年第11期9卷 3291-3304页

作者： Tarachand Vikash Sharma Ranu bhatt Vedachalaiyer Ganesan Gunadhor Singh Okram UGC-dAE Consortium for Scientific Research Indore 452001 India Technical Physics division Bhabha Atomic Research Centre Mumbai 400085 India

This is the first report on the thermoelectric properties of a catalyst-free polyol method used to prepare stoichiometric Bi2-xCuxS3 samples, x = 0.1, 0.2, 0.3, 0.4, via hot pressing. Various systematic approaches to arrive at in their stoichiometric compositions are explored precisely with introduction of excess precursor of S. X-ray diffraction data analysis using Rietveld refinement confirms a polyhedral orthorhombic crystal structure with a space group Pnma, in contrast to Pbnm reported earlier. Raman data further substantiates this. X-ray photoelectron spectroscopy confirms the valence states of the constituent elements （Bi^3＋, Cu^2＋, and S^2-） and energy dispersive X-ray analysis corroborates their compositions. The particle sizes of the pure Bi2S3 nanoparticles were 20, 35, and 82 nm as determined from the Scherrer formula, atomic force microscopy, and dynamic light scattering, respectively. Their transmission electron microscopy image shows rod-like nanostructures elongated in the 〈010〉 direction with an average diameter of 23 nm and a length of several hundreds of nanometers. A 34% improvement in the thermoelectric figure of merit is observed for Bi.6Cu0.4S3 as compared to pure Bi2S3 at 300 K.

关键词： Bi2S3 polyol nanorods thermoelectrics

Physical properties of lunar craters

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Research in Astronomy and Astrophysics 2017年第3期17卷 23-38页

作者： Maitri P. Joshi Kushal R bhatt Rajmal Jain Shri Maneklal M.Patel Institute of Sciences and Research Kadi Sarva VishwavidhyalayaGandhinagar-382015India

The surface of the Moon is highly cratered due to impacts of meteorites, asteroids, comets and other celestial objects. The origin, size, structure, age and composition vary among craters. We study a total of 339 craters observed by the Lunar Reconnaissance Orbiter Camera （LROC）. Out of these 339 craters, 214 craters are known （named craters included in the IAU Gazetteer of Planetary Nomenclature） and 125 craters are unknown （craters that are not named and objects that are absent in the IAU Gazetteer）. We employ images taken by LROC at the North and South Poles and near side of the Moon. We report for the first time the study of unknown craters, while we also review the study of known craters conducted earlier by previous researchers. Our study is focused on measurements of diameter, depth, latitude and longitude of each crater for both known and unknown craters. The diameter measurements are based on considering the Moon to be a spherical body. The LROC website also provides a plot which enables us to measure the depth and diameter. We found that out of 214 known craters, 161 craters follow a linear relationship between depth （d） and diameter （d）, but 53 craters do not follow this linear relationship. We study physical dimensions of these 53 craters and found that either the depth does not change significantly with diameter or the depths are extremely high relative to diameter （conical）. Similarly, out of 125 unknown craters, 78 craters follow the linear relationship between depth （d） and diameter （d） but 47 craters do not follow the linear relationship. We propose that the craters following the scaling law of depth and diameter, also popularly known as the linear relationship between d and d, are formed by the impact of meteorites having heavy metals with larger dimension, while those with larger diameter but less depth are formed by meteorites/celestial objects having low density material but larger diameter. The craters with very high depth and with very small d

关键词： Moon meteorites meteors meteoroids- planets and satellites: surfaces

Structural and mass transport properties of liquid ytterbium in the temperature range 1123 K–1473 K

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Chinese Physics B 2023年第6期32卷 481-488页

作者： d d Satikunvar N K bhatt B Y Thakore department of Physics Sardar Patel UniversityVallabh VidyanagarGujarat 388120India department of Physics Maharaja Krishnakumarsinhji Bhavnagar UniversityBhavnagarGujarat 364001India

We have studied the structural and atomic transport properties of liquid f-shell Yb in the temperature range 1123 K–1473 K. Pair interactions between atoms are derived using a local pseudopotential. The potential parameters are fitted to the phonon dispersion curve at room temperature. The local pseudopotential used in the present study is computationally more efficient with only three parameters, and it is found to be transferable to the liquid phase without changing the *** the various computed properties agree with reported theoretical and experimental findings, the adopted fitting scheme is justified. As a significant outcome of the study, we find that(i) the melting in Yb is governed by the Lindemann's law,(ii)the mass transport mechanism obeys the Arrhenius law,(iii) the role of the three-particle correlation function in deriving the velocity autocorrelation function is small,(iv) the mean-square atomic displacement is more sensitive to the choice of interaction potential than the other bulk properties, and(v) liquid Yb does not show liquid–liquid phase transition within the studied temperature range. Further, due to the good description of the structural and mass transport properties, we propose that Yb remains divalent at reduced density.

关键词： transport properties pseudopotential single-particle dynamics ytterbium

Eu(Ⅲ) Indirect Probe to Investigate Interaction of dOPA (3,4,di-Hydroxyphenylalanine) and dopamine (3,4-dihydroxy Phenyl Ethyl Amine) Using Electrochemical Methods

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Journal of Rare Earths 2006年第6期24卷 653-658页

作者： Prashant N bhatt Trupti V Pathak Jignasu P Mehta G.Ramchandraiha department of Chemistry Bhavnagar University Bhavnagar-364002 India Central Salt and Marine Chemical Research Institute Waghavadi RoadBhavnagar-364002India

Eu（ Ⅲ ） can be utilized as an indirect electrochemical probe to investigate the interaction of bio-molecules such as dOPA and dopamine with Ca（ Ⅱ ） in vitro. The interaction of dOPA and dopamine with Eu（ Ⅲ ）-Eu（ Ⅱ ） redox pair was investigated by electrochemical techniques. Both the neurotransmitters are structurally related and undergo interaction with Eu （Ⅲ ）. Eu （ Ⅲ ） coordinates with dOPA and dopamine through five-member chelate tings via carboxylic oxygen and amino nitrogen. The electrode kinetic parameters viz, transfer coefficient （αna）, diffusion coefficient （d）, forward heterogeneous rate constant （ k^0 fh） were evaluated for Eu（ Ⅲ ）-dOPA/Eu（ Ⅲ ）-dopamine. The results obtained were used to investigate the nature of interaction of Eu （Ⅲ） with muhi-donor biomolecules. The possible mechanism was also proposed.

关键词： electrochemistry of Eu ( Ⅲ ) chrono techniques electrochemistry of Eu ( Ⅲ )-neurotransmitters solutionstudy rare earths