检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

熔融盐电解精炼法提纯工业硅的研究

轻金属 1989年第8期 46-47,56页

作者： I.G.Sharma t.k.mukherjee 赵恒先

一篇关于硅冶金过程的综述文献指出,在电弧炉里用碳热还原二氧化硅大批量生产的工业硅,是制备太阳能和电子工业需要的高纯硅的适宜原料。曾报道过许多提纯工业硅的方法,如酸浸、配合金、高温氯化。

关键词：工业硅电解精炼熔融盐阴极电流效率冶金过程阴极电流密度高纯硅酸浸电弧炉批量生产

在线全文

学校读者我要写书评

暂无评论

用氯化铜-氧浸出镍铜硫化物精矿

湿法冶金 1986年第4期 58-61+51页

作者： t.k.mukherjee ,山鸣

本文叙述了在中等氧压下,用氯化铜的浓盐水溶液浸出镍、铜硫化物精矿的研究结果。充氧不仅有助于维持浸出介质中高的铜与亚铜离子比,而且也有利于抑制难溶性针铁矿中铁的溶解,因此能得到一种相对无铁的含镍、铜溶液。研究了氯化铜用量... 详细信息

本文叙述了在中等氧压下,用氯化铜的浓盐水溶液浸出镍、铜硫化物精矿的研究结果。充氧不仅有助于维持浸出介质中高的铜与亚铜离子比,而且也有利于抑制难溶性针铁矿中铁的溶解,因此能得到一种相对无铁的含镍、铜溶液。研究了氯化铜用量、矿浆浓度、时间、温度、氧压、盐酸浓度以及给矿粒度对浸出过程的影响。在此基础上,确定了适合于大部分共生的镍和铜浸出的联合工艺参数,并得到了一种低铁的溶液。

关键词：浸出时间氯化铜溶液矿浆浓度浸出率铜硫化物

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

杂种肉鸡血液酶的水平与经济性状的关系

中国家禽 1985年第2期 38-39页

作者： t.k.mukherjee 包世增

引言家禽文献已引用关于质量性状(血型、蛋白质或酶的多态型)和经济性状之间相互关系的报告(Briles 等1961,Allen 等1962).家禽遗传学家也正在研究可用作经济性状遗传潜势指标的血液中某些生理或生化成分水平。在家禽不同品系间的血清... 详细信息

引言家禽文献已引用关于质量性状(血型、蛋白质或酶的多态型)和经济性状之间相互关系的报告(Briles 等1961,Allen 等1962).家禽遗传学家也正在研究可用作经济性状遗传潜势指标的血液中某些生理或生化成分水平。在家禽不同品系间的血清胆甾醇和碱性磷酸酶水平(wilcox 等1962、1963)与火鸡血桨胆甾醇和胆碱脂酶水平(mukherjee等1969、1970)方面存在着遗传差异的证

关键词：经济性状遗传力火鸡估计值遗传率胆碱脂酶杂种杂交种表型相关血液解剖学

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

一种新型鱼饲料添加剂——光养细菌

江西饲料 2001年第6期 16-18页

作者：周生飞 S.Banerjee S.A.Azad S.Vikineswary O.S.Selvaraj t.k.mukherjee 山东农大动科院

在商品***饲料中添加单细胞的本地生光养菌-红螺菌,通过对其菌体的营养学评价及毒性检测,可证明这类细菌能作为水产养殖业的饲料添加剂。试验通过对***饲喂添加这类细菌的饲料,结果表明:***有很高的存活率及很明显的生长率(P<0.001)。... 详细信息

在商品***饲料中添加单细胞的本地生光养菌-红螺菌,通过对其菌体的营养学评价及毒性检测,可证明这类细菌能作为水产养殖业的饲料添加剂。试验通过对***饲喂添加这类细菌的饲料,结果表明:***有很高的存活率及很明显的生长率(P<0.001)。这表明红螺菌能作为水产养殖业的饲料添加剂加以应用。

关键词：红螺菌单细胞蛋质鱼类营养光养细菌鱼用饲料添加剂

Influence of Heat Input on Martensite Formation and Impact Property of Ferritic-Austenitic Dissimilar Weld Metals

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & technology 2012年第4期28卷 343-352页

作者： M. mukherjee t.k. Pal Welding technology Centre Metallurgical and Material Engineering Department Jadavpur University

the effect of heat input on martensite formation and impact properties of gas metal arc welded modified ferritic stainless steel （409M） sheets （as received） with thickness of 4 mm was described in detail in this work. the welded joints were prepared under three heat input conditions, i.e. 0.4, 0.5 and 0.6 kJ/mm using two different austenitic filler wires （308L and 316L） and shielding gas composition of Ar ＋ 5% CO2. the welded joints were evaluated by microstructure and charpy impact toughness. the dependence of weld metal microstructure on heat input and filler wires were determined by dilution calculation, Creq/Nieq ratio, stacking fault energy （SFE）, optical microscopy （OM） and transmission electron microscopy （tEM）. It was observed that the microstructure as well as impact property of weld metal was significantly affected by the heat input and filler wire. Weld metals prepared by high heat input exhibited higher amount of martensite laths and toughness compared with those prepared by medium and low heat inputs, which was true for both the filler wires. Furthermore, 308L weld metals in general provided higher amount of martensite laths and toughness than 316L weld metals.

关键词： Heat input Ferritic-austenitic dissimilar weld Martensite Grain size toughness

Doubly Excited 1,3Fe States of two-Electron Atoms under Weakly Coupled Plasma Environment

在线全文

学校读者我要写书评

暂无评论

Communications in theoretical Physics 2019年第7期71卷 853-860页

作者： S. Dutta J. k. Saha S. Bhattacharyya t. k. mukherjee Belgharia texmaco Estate School BelghariaKolkata 700056India Department of Physics Naxula Institute of TechnologyAgarparaKolkata 700109India Department of Physics Aliah UniversityIIA/27NewtownKolkata 700160India Department of Physics Acharya Prafulla Chandra CollegeNew BarrackporeKolkata 700131India

Precise energy eigenvalues of metastable bound doubly excited 1,3Fe states originating from 2 pnf(n=4–6)configuration of helium-like ions(Z=2–4)under weakly coupled plasma(WCP)environment have been estimated within the framework of Ritz variational *** wavefunction is expanded in explicitly correlated Hylleraas type basis *** screened Coulomb potential is consideredas mimic the WCP *** atomic systems tend towards gradual instability and the number of excited metastable bound states reduces with increasing plasma *** wavelengths corresponding to 2 pnf(1,3F^e)→2 pnf(1,3Do)(n=4–6;n′=3–6)transitions occurring between doubly excited states of plasma embedded two-electron ions are also reported.

关键词： two-electron atom doubly excited states variational method weakly coupled plasma Hylleraas co-ordinate

Oligomerization of Vibrio cholerae Hemolysin Induces CXCR3 Upregulation and Activation of B-1a Cell

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2008年第3期5卷 231-234页

作者： Gayatri mukherjee kalyan k Banerjee tapas Biswas Divisions of Immunology National Institute of Cholera and Enteric Diseases P-33 C.I.T. Road Scheme XM Kolkata-700 010 West Bengal India Biochemistry National Institute of Cholera and Enteric Diseases P-33 C.I.T. Road Scheme XM Kolkata-700 010 West Bengal India

the hemolysin oligomer promotes the proliferation of B-1a cells and the expression of CD25, which is indicative of cell activation, on B-1a cells. the upregulation of CD86 induced by the oligomer showed its selective bias for the B7-2 member of B7 family while the monomer failed to induce these effects. the oligomer induced the expression of CXCR3, associated with B cell activation, while the monomer induced the expression of CXCL4, a powerful angiostatic chemokine. In conclusion, we found that B-1a cells responded to the apoptogenic monomer by expressing CXCL4, whereas oligomerization of the immunogen induced CXCR3 to shift the response towards activation.

关键词： B-1a cell CD86 CXCL4 CXCR3 Vibrio cholerae hemolysin

Structural and electrical transport properties of a rare earth double perovskite oxide:Ba_2ErNbO_6

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2014年第4期32卷 334-342页

作者： Rajesh mukherjee Binita Ghosh Sujoy Saha Chandrahas Bharti t.P.Sinha Department of Physics Ramananda College Department of Physics Bose Institute Sensor and Actuator Division CSIR-Central Glass and Ceramic Research Institute

the double perovskite oxide barium erbium niobate, Ba2ErNbO6 （BEN） was synthesized by solid state reaction technique. Rietveld refinement of the X-ray diffraction pattern of the sample showed cubic （Fm3m） phase at room temperature. Fourier trans-form infrared spectrum showed two primary phonon modes of the sample at around 387 and 600 cm-1. Raman spectrum of the sam-ple taken at 488 nm excitation wavelength showed four primary strong peaks at 106, 382, 747 and 814 cm-1. Lorentzian lines with 10 bands were used to fit the Raman spectrum. A group theoretical study was performed to assign all the Raman modes. Impedance spectroscopy was applied to investigate the ac electrical conductivity of BEN in a temperature range from 303 to 673 k and in a fre-quency range from 100 Hz-1 MHz. the dielectric relaxation mechanism was discussed in the frame work of permittivity, conduc-tivity, modulus and impedance formalisms. the complex plane plot of the impedance data was modeled by an equivalent circuit con-sisting of two serially connected R-CPE units, （one for the grain and the other for the grain boundary）, each containing a resistor （R） and a constant phase element （CPE）. the R-CPE units were used to incorporate the non-ideal character of the polarization phenome-non instead of an ideal capacitive behaviour. the relaxation time corresponding to dielectric loss was found to obey the Arrhenius law with activation energy of 0.85 eV. the frequency dependent conductivity spectra followed the Jonscher power law. the Cole-Cole model was used to investigate the dielectric relaxation mechanism in the sample.

关键词： perovskites Rietveld refinement Raman spectroscopy impedance spectroscopy rare earths

A simple chemical method for the synthesis of Cu^(2+) engrafted MgAl_(2)O_(4) nanoparticles: Efficient fluoride adsorbents, photocatalyst and latent fingerprint detection

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第2期32卷 301-315页

作者： Arnab mukherjee Mrinal kAdak Prasanta Dhak Debasis Dhak Nanomaterials Research Lab Department of ChemistrySidho-Kanho-Birsha UniversityPurulia 723104India Department of Chemistry Techno India UniversityKolkata 700091India

An adaptable, energy efficient chemical process is employed to synthesize Cu^2+engrafted MgAl2O4 nanoparticles(Mg1-xCuxAl2O4, x = 0, 0.1, 0.3, 0.5 abbreviated as MCA0, MCA1, MCA3,and MCA5 respectively), using chelating ligand and the calcination temperature was determined by the thermogravimetric analysis of the precursor *** acted as good fluoride adsorbent in the presence of co-ions, different pH(2–11) via chemisorption revealed from Fourier-transform infrared spectroscopy(FtIR) and photodegraded Methylene Blue(MB).the satisfactory results were for MCA1(specific surface area 25.05 m^2/g) with 97%fluoride removal at pH 7.0 for the 10 mg/L initial fluoride concentration for 1.5 g/L adsorbent dose with 45 min contact time obeying the Langmuir isotherm model with negative thermodynamic parameters and 4 mmol of MCA3 with 98.51% photodegradation for 10-5 mol/L MB solution obeying pseudo-second-order and pseudo-first-order kinetics *** proposed photodegradation mechanism of MB was established by the FtIR and high-performance liquid chromatography(HPLC) *** nanoparticles are cubic, estimated through X-ray diffraction(XRD) and transmission electron microscopy(tEM) *** band gap energies, grain size, and the effective working pH were estimated by diffuse reflectance spectra(DRS), scanning electron microscope(SEM), and zero-point potential analysis respectively.A soil candle with MCA1 also fabricated for the household purpose and tested with some fluorinated field *** MCA3 was able to enhance the latent fingerprint on smooth surfaces.

关键词： Fluoride adsorbent Photocatalysis Mechanism Fingerprint detection kroger-Vink notation Soil candle