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| 1 | 玉米秸秆和小麦秸秆生物炭的热稳定性及化学稳定性显示文摘为探究秸秆类农业废弃物所制备生物炭的稳定性,以玉米秸秆和小麦秸秆为原料,分别在200℃和500℃下制备生物炭,通过元素分析、傅里叶红外光谱分析、热重及差热分析等分别探究了生物炭的理化性质及热稳定性。结果表明:玉米秸秆因木质素含量较小麦秸秆高,相同温度下制备的生物炭的热稳定性更高。NaClO、H_2O_2和KMnO4三种氧化剂对生物炭的氧化结果表明,秸秆类生物炭的抗氧化性不仅与高木质素含量有关,且受矿物保护的影响。尤其是在KMnO4体系中,木质素和纤维素含量低、灰分含量高的麦秆及其生物炭的化学稳定性更强,表现出了与热稳定性不同的规律。此外,较高温度下制备的生物炭表现出较强的抗氧化能力,具有较大的碳封存潜力。 | 赵金凤 陈静文 张迪 Ghosh Saikat | 2019 | 农业环境科学学报2019，38，2： | 19 |
| 2 | Biochar and its importance on nutrient dynamics in soil and plant显示文摘Biochar,an environmentally friendly soil conditioner,is produced using several thermochemical processes.It has unique characteristics like high surface area,porosity,and surface charges.This paper reviews the fertilizer value of biochar,and its effects on soil properties,and nutrient use efficiency of crops.Biochar serves as an important source of plant nutrients,especially nitrogen in biochar produced from manures and wastes at low temperature(≤400℃).The phosphorus,potassium,and other nutrient contents are higher in manure/waste biochars than those in crop residues and woody biochars.The nutrient contents and pH of biochar are positively correlated with pyrolysis temperature,except for nitrogen content.Biochar improves the nutrient retention capacity of soil,which depends on porosity and surface charge of biochar.Biochar increases nitrogen retention in soil by reducing leaching and gaseous loss,and also increases phosphorus availability by decreasing the leaching process in soil.However,for potassium and other nutrients,biochar shows inconsistent(positive and negative)impacts on soil.After addition of biochar,porosity,aggregate stability,and amount of water held in soil increase and bulk density decreases.Mostly,biochar increases soil pH and,thus,influences nutrient availability for plants.Biochar also alters soil biological properties by increasing microbial populations,enzyme activity,soil respiration,and microbial biomass.Finally,nutrient use efficiency and nutrient uptake improve with the application of biochar to soil.Thus,biochar can be a potential nutrient reservoir for plants and a good amendment to improve soil properties. | Md Zahangir Hossain Md Mezbaul Bahar Binoy Sarkar Scott Wilfred Donne Young Sik Ok Kumuduni Niroshika Palansooriya Mary Beth Kirkham Saikat Chowdhury Nanthi Bolan | 2020 | Biochar2020，2，4： | 15 |
| 3 | Mineralogy and carbothermal reduction behaviour of vanadium-bearing titaniferous magnetite ore in Eastern India显示文摘Vanadium-bearing titaniferous magnetite bands hosted by Precambrian gabbro-norite-anorthositic rocks or their metamorphic equivalents were discovered in some parts of Eastern Indian Shield,containing 48%-49%Fe(total),10%-25%TiO2,and 0.3%-2.20%V2O5by mass.Mineralogical and petrological study,composition,and characterization of the vanadium-bearing titaniferous magnetite ore were carried out by scanning electron microscopy-energy dispersive X-ray(SEM-EDX),wave length X-ray florescence(WDXRF),inductively coupled plasma-atomic emission spectroscopy(ICP-AES),X-ray difraction(XRD),etc.Chemical beneficiation for valuable metals,such as Fe,Ti,and V,was performed by reduction roasting.The direct and indirect reduction were investigated by mixing the lump ore with solid activated charcoal in a closed reactor and purging the reducing gas mixture in standard reducibility index apparatus at diferent temperatures and time intervals.The reduction roasting parameters were optimized.Finally,the reduced samples were crushed and upgraded by magnetic separation.The results show that,the maximum mass fractions of magnetic and nonmagnetic parts achieved are 69.36%and 30.64%,respectively,which contain 10.6%TiO2and 0.84%V2O5in the magnetic part and 36.5%TiO2and 0.22%V2O5in the nonmagnetic part. | Saikat Samanta Manik Chandra Goswami Tapan Kumar Baidya Siddhartha Mukherjee Rajib Dey | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，10： | 9 |
| 4 | An ethnobotanical survey of medicinal plants used by ethnic people in West and South district of Tripura, India显示文摘An ethno-medicinal investigation was conducted to highlights the traditional knowledge of medicinal plants being used by the tribe in West and South district of Tripura. This paper provides information about the different uses of plants used in their primary health care system. Tripura is a small north-eastern state of India and also a part of both Himalayan and Indo-Burma biodiversity region. It is a goldmine of medicinal plants and use of different plants in tribal traditional heath care systems has long history. Nineteen different tribes in Tripura, depend on natural resources at a great extent. This paper documented 113 medicinal plant species from 56 families along with their botanical name, local name, family name, habit, medicinal parts used, and traditional usage of application. The dominant families are Euphorbiaceae (7 species), Apocynaceae (6 species), Fabaceae and Rubiaceae (5 species each), Caesalpiniaceae, Asteraceae, Liliaceae and Verbenaceae (4 species each), Combretaceae, Labiatae, Malvaceae, Rutaceae and Zingiberaceae (3 species each). Tribes of Tripura have rich traditional knowledge on plant based medicine. Different parts of the plants in crude form/plant extracts/decoctions/infusion or pastes are employed in diverse veterinary and human diseases by the tribe's of Tripura in daily life. | Saikat Sen Raja Chakraborty Biplab De N Devanna | 2011 | Journal of Forestry Research2011，22，3： | 5 |
| 5 | 天然有机质模型化合物分子结构对碳纳米管分散性的影响显示文摘研究了不同分子结构的天然有机物质(NOM)模型化合物单宁酸(TA)、没食子酸(GA)和十二烷基苯磺酸钠(SDBS)对碳纳米管(CNTs)分散性的影响.通过计算得出,TA的临界胶束浓度(CMC)为1.12mmol/L,SDBS的CMC为0.24mmol/L,GA在所测试的浓度范围内没有形成胶束.比较NOM在CNTs表面的吸附过程和CNTs的分散过程,表明空间位阻和胶束包裹是2个促进CNTs分散的主要机理.借助透射电子显微镜(TEM)和测量悬浮的CNTs的平均流体动力学直径(DLS)结果表明,TA在较少的固相吸附量(Se≈0.01mmol/g)就能使CNTs分散,归因于其吸附后刚性芳香三维结构的TA能形成的较大空间位阻;同样具有芳香平面结构的GA分子在CNTs表面的吸附需要达到一定的厚度(Se>0.2mmol/g),才能有效地分散CNTs;具有烷基脂肪链的SDBS,需要在形成半胶束或胶束后(Se>0.13mmol/g)CNTs才能有效地被分散.芳香族刚性结构和脂肪族柔性结构的模型化合物对CNTs的分散效果和机理存在较大的差别. | 王朋 张迪 石林 于梦梦 Ghosh Saikat | 2018 | 中国环境科学2018，38，9： | 4 |
| 6 | 天然有机质对纳米碳管环境行为的影响研究进展显示文摘随着纳米技术的快速发展,大量的纳米碳管(CNTs)不可避免地释放到环境中。由于其较大的憎水性表面,CNTs与有机污染物和天然有机质(NOM)强烈地相互作用。综述了NOM存在下CNTs的环境行为,包括NOM对CNTs分散特性和吸附有机污染物特性的影响。着重论述了NOM的理化性质对CNTs分散的影响,'拉拉链'或'胶束包裹'是主要的分散机制。强调应该对不同分散机制下分散的CNTs与有机污染物的相互作用给予更多的关注,提出了目前在液相环境中直接测定CNTs表面积的新思路,并对今后的研究方向进行了展望。 | 王朋 张迪 张凰 Ghosh Saikat | 2017 | 材料导报2017，31，1： | 4 |
| 7 | A numerical modelling approach to assess the behaviour of underground cavern subjected to blast loads显示文摘The paper gives an insight into the behaviour of large underground caverns which are subjected to blast loads. Caverns are generally constructed in hard rock formation which compels us to use blasting methods for the excavation works. Comparative study was done between models with intact rock mass and discontinuities to assess the stability of cavern as a result of blast loads. Numerical modelling was performed with 3 dimensional distinct element code(3 DEC) to analyse the performance of cavern walls in terms of displacement and to compute peak particle velocities(PPV) both around the cavern periphery and at surface of models. Results showed that the velocity wave with higher frequency exhibited large displacements around the periphery of cavern. Computation of PPV showed that model with horizontal joint sets showed lower PPV in comparison to model with intact rock mass. PPV values were also analysed on the surface for model consisting vertical joints spaced at 4 m intervals. Comparative study of PPV on surface vertically above the blast location between models with horizontal joints spaced at 4 m and vertical joints at 4 m intervals were conducted. Results depicted higher magnitudes of PPV for model with vertical joints in comparison to model with horizontal joints. | Saikat Kuili Vedala Rama Sastry | 2018 | International Journal of Mining Science and Technology2018，28，6： | 3 |
| 8 | An account of the strategies to enhance the water splitting efficiency of noble-metal-free electrocatalysts显示文摘The electrolysis of water for hydrogen generation has shown immense promise as an energy conversion technology for the green energy economy.Two concurrently occurring electrochemical reactions in water electrolysis(hydrogen and oxygen evolution reactions)are sluggish in nature and therefore the employment of electrocatalysts is highly essential.Noble-metal-based electrocatalysts(Pt,Ru O_(2),Ir O_(2),etc.)have shown superior activity towards these reactions.However,their lower natural abundance and inferior stability make the cost to performance ratio of water electrolysis too high.Thus,huge amount of research efforts are being carried out to develop electrocatalysts consisting of earth abundant elements(transition metals,carbon etc.)as the replacement of these noble-metal-based materials.Transition metal compounds,carbonaceous and hybrid materials have shown promise as efficient electrocatalysts but there is still huge gap between the activities of these materials and the noble-metal-based electrocatalysts.Several strategies like morphology modulation,elemental doping,defect engineering etc.are being deployed to enhance the activity of these noble-metal-free electrocatalysts.This review summarizes these strategies and thoroughly discusses the reason behind the changes in activity of the electrocatalysts owing to these modifications.Finally,the remaining research gaps and future prospects in this field are also discussed in detail. | Subhasis Shit Saikat Bolar Naresh Chandra Murmu Tapas Kuila | 2021 | Journal of Energy Chemistry2021，30，8： | 3 |
| 9 | Bioautography and its scope in the field of natural product chemistry显示文摘Medicinal plants, vegetables and fruits are the sources of huge number of bioactive lead/scaffolds with therapeutic and nutraceutical importance. Bioautography is a means of target-directed isolation of active molecules on chromatogram. Organic solvents employed in chromatographic separation process can be completely removed before biological detection because these solvents cause inactivation of enzymes and/or death of living organisms. They offer a rapid and easy identification of bioactive lead/scaffolds in complex matrices of plant extracts. Bioautography is a technique to isolate hit(s)/lead(s) by employing a suitable chromatographic process followed by a biological detection system. This review critically describes the methodologies to identify antimicrobial, antioxidant, enzyme inhibitor lead/scaffolds by employing bioautography. A significant number of examples have been incorporated to authenticate the methodologies. | Saikat Dewanjee Moumita Gangopadhyay Niloy Bhattacharya Ritu Khanra Tarun K.Dua | 2015 | Journal of Pharmaceutical Analysis2015，5，2： | 3 |
| 10 | pH值、离子强度和粒径对氧化石墨烯稳定性的影响显示文摘氧化石墨烯(Graphene oxide,GO)表面具有丰富的官能团和较高的比表面积,能够作为膜材料应用于膜分离技术.然而,目前合成GO的技术很难保证其横向尺寸的均一性.此外,GO在自然水环境中分散性的稳定性受环境中pH值和离子强度的影响.本文研究了横向尺寸、pH值和离子强度对GO表面双电层电荷或结构组装所需的相互作用力的影响.从原位原子力显微镜(Atomic force microscope,AFM)获得的力-距离曲线(F-D)可以看出,溶液条件对DLVO力的作用.GO的双电层静电斥力随着pH值的升高而增大,这可能是由于表面官能团的电离作用增强所致.但随着离子强度的增加,双电层斥力减小,得到的数据与DLVO理论一致.通过Zeta电位和开尔文探针力显微镜(Kelvin probe force microscopy,KPFM)测量,确定了氧化石墨烯片层表面电荷的不均匀性. | 毛翰 董蕙 Ghosh Saikat 王振全 郭进 | 2019 | 环境化学2019，38，10： | 3 |
| 11 | Artificial Seed Production of Tylophora indica for Interim Storing and Swapping of Germplasm显示文摘Our research work demonstrates the single bead alginate-encapsulation, interim storing and conversion of Tylophora indica(Burm. Fil.) Merrill.Most effective encapsulation of in vitro nodal segments [(4 ± 1) mm long], ensuing in sphere-shaped artificial seeds of similar morphology, was achieved through 75 mmol·L^(-1)calcium chloride(CaCl_2 · 2H_2O) plus 3%(w/v) Na-alginate with 93.3% conversion frequency. The earliest conversion(within 7 days of incubation) of artificial seeds occurred in half-strength liquid Murashige and Skoog medium. Among the three different temperature regimes [(5 ± 1) °C,(15 ± 1) °C, and(25 ± 1) °C], storage of artificial seeds at(15 ± 1) °C executed the highest frequency of conversion(90%) after 15 days of storage. Lengthier storage significantly reduced the conversion frequency of artificial seeds irrespective of storage temperature. Nevertheless, the conversion frequency after 30 days of storage at(15 ± 1) °C was recorded at 70% without further decline even following45 days of storage, which evidently suggests that lower temperature(15 ± 1) °C is apt for storage and subsequent conversion of T. indica artificial seeds. The present protocol could be expedient for short-term storing and swapping of T. indica germplasms between national and international laboratories. | Saikat Gantait Joshitha Vijayan Adity Majee | 2017 | Horticultural Plant Journal2017，3，1： | 3 |
| 12 | 印度药用植物Meyna spinosa Roxb.叶中的总酚、总黄酮含量及抗氧化作用(英文)显示文摘AIM: The objective of the present study was to determine the total phenolic and total flavonoid contents, and to evaluate the antioxidant potential of different leaf extracts of Meyna spinosa Roxb. ex Link, a traditional medicinal plant of India. METHODS: Free radical scavenging and antioxidant potential of the methanol, ethyl acetate, and petroleum ether extracts of Meyna spinosa leaves were investigated using several in vitro and ex vivo assays, including the 2, 2-diphenyl-picrylhydrazyl radical scavenging, superoxide anion scavenging, hydroxyl radical scavenging, nitric oxide radical scavenging, hydrogen peroxide scavenging activity, metal chelating assay, and reducing power ability method. Total antioxidant activity of the extracts was estimated by the ferric thiocyanate method. Inhibition assay of lipid peroxidation and oxidative hemolysis were also performed to confirm the protective effect of the extracts. Total phenolic and total flavonoid contents of the extracts were estimated using standard chemical assay procedures. RESULTS: Methanol extracts showed the highest polyphenolic content and possessed the better antioxidant activity than the other two extracts. Total phenolic and total flavonoid contents in the methanol extract were (90.08 ± 0.44) mg gallic acid equivalents/g and (58.50 ± 0.09) mg quercetin equivalents/g, respectively. The IC 50 of the methanol extract in the DPPH , superoxide anion, hydroxyl radical, nitric oxide radical, hydrogen peroxide scavenging activity and metal chelating assays were (16.4 ± 0.41), (35.9 ± 0.19), (24.1 ± 0.33), (23.7 ± 0.09), (126.8 ± 2.92), and (117.2 ± 1.01) μg·mL-1 , respectively. The methanol extract showed potent reducing power ability, total antioxidant activity, and significantly inhibit lipid peroxidation and oxidative hemolysis which was similar to that of standards. CONCLUSION: The results indicated a direct correlation between the antioxidant activity and the polyphenolic content of the extracts, which may the foremost contributors to the antioxidant activity of the plant. The present study confirmed that the methanol extract of Meyna spinosa leaves is a potential source of natural antioxidants. | Saikat Sen Biplab De N Devanna Raja Chakraborty | 2013 | 中国天然药物2013，11，2： | 2 |
| 13 | Reproductive outcomes in women with congenital uterine anomalies detected by three-dimensional ultrasound screening显示文摘 | Brigitte Woelfer Rehan Salim Saikat Banerjee Janine Elson Lesley Regan Davor Jurkovic | 2001 | Obstetrics & Gynecology2001，，： | 2 |
| 14 | 单宁酸-铁离子纳米薄膜的合成及应用现状显示文摘单宁酸-铁离子纳米薄膜(Fe;TA薄膜)是由自然界中分布广泛的铁离子和单宁酸快速自组装形成的新型纳米材料,属于金属有机骨架结构材料(Metal Organic Framework,MOF).该类材料具有绿色环保、比表面积高、孔径大、制备过程简单、成本低、金属活性位点丰富、黏附性强等特点.与其他MOF材料相比,Fe^(Ⅲ)TA薄膜的绿色制备和降解过程使其在生物学、能源与环保领域显现出巨大的应用潜力.本文从Fe^(Ⅲ)TA薄膜的合成、组装途径、在生物学和环境领域的应用等方面综述了Fe^(Ⅲ)TA薄膜的研究进展.针对目前Fe^(Ⅲ)TA薄膜应用的不足提出研究建议,并对其在环境领域的发展趋势进行展望. | 何南 王振全 董蕙 苏博 Saikat Ghosh | 2021 | 环境化学2021，40，11： | 2 |
| 15 | Antidiabetic activity of Diospyros peregrina fruit: Effect on hyperglycemia, hyperlipidemia and augmented oxidative stress in experimental type 2 diabetes显示文摘 | Saikat Dewanjee Anup K. Das Ranabir Sahu Moumita Gangopadhyay | 2009 | Food and Chemical Toxicology2009，，10： | 2 |
| 16 | Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India显示文摘The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies(FTIR, Raman, UV-visible) of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ ·mol-1, and two successive structural changes of silica at 848 K and 1145 K. | Ritayan Chatterjee Shamik Chaudhuri Saikat Kumar Kuila Dinabandhu Ghosh | 2015 | International Journal of Minerals,Metallurgy and Materials2015，22，3： | 2 |
| 17 | Phytochemical screening and evaluation of cytotoxic and hypoglycemic properties of Mangifera indica peels显示文摘Objective: To investigate the presence of different phytoconstituents in Mangifera indica(M. indica) peel and evaluate its cytotoxicity to Artemia salina and hypoglycemic potential in Swiss albino mice.Methods: The methanolic extract of M. indica peel was used to determine the presence of phytoconstituents. Brine shrimp lethality bioassay method was followed to determine the cytotoxic potential of plant extract. In the case of hypoglycemic activity, oral administration of extract at 200 and 400 mg/kg and standard glibenclamide at 10 mg/kg was done, followed by determining the percentage of reduction of plasma glucose from the initial level.Results: The methanolic extract of M. indica peel showed the presence of flavonoid,saponin, steroid, tannins, terpenoids, glycosides and alkaloids. In brine shrimp lethality bioassay, the LC_(50) of the extract and standard vincristine sulfate was found to be 2.04 and0.41 mg/mL, respectively. After 90 and 150 min, the methanolic extract at 200 and 400 mg/kg showed prominent plasma glucose reduction of 13.95%, 22.48% and 14.16%,26.18% respectively compared to standard glibenclamide showing 14.90% and 20.67% plasma glucose reduction.Conclusions: This current research affirms prominent cytotoxic and moderate hypoglycemic potential of M. indica peel. Further bioactivity guided isolation of phytoconstituents and investigation on higher animals can lead to development of new drug molecules. | Sabiha Chowdhury Saikat Kumar Poddar Sarah Zaheen Farah Ashrafi Noor Najneen Ahmed Sanjana Haque Abhijit Sukul Sauda Binte Sunjida MdMahabob Ullah Mazumder Nusrat Akbar | 2017 | Asian Pacific Journal of Tropical Biomedicine2017，7，1： | 2 |
| 18 | Direct induction of protocorm-like bodies from shoot tips, plantlet formation, and clonal fidelity analysis in Anthurium andreanum cv. CanCan显示文摘 | Saikat Gantait Uma Sinniah Nirmal Mandal Prakash Das | 2012 | Plant Growth Regulation2012，，3： | 1 |
| 19 | Microwave assisted rapid conversion of carbohydrates into 5- hydroxymethylfurfural catalyzed by mesoporous TiO2 nanoparticles 显示文摘 | SAIKAT D SUDIPTA D ASTAM K P | 2011 | Applied Catalysis A: General2011，，2： | 1 |
| 20 | Acoustic infinite elements for non-separable geometries显示文摘 | Shirron Joseph J Dey Saikat | 2002 | Comput Methods Appl Mech Engrg2002，191，5： | 1 |
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