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Journal of Rare Earths 2024年第10期42卷 1995-2002页

作者： Minakshi Koundal Chhaya Sharma A.K.Singh Department of Applied Science and Engineering Indian Institute of Technology RoorkeeSaharanpur Campus Department of Pulp and Paper Technology indian Institute of Technology Roorkee Saharanpur Campus

Cerium tartrate（CeTar）,produced in this study by precipitating cerium nitrate with potassium sodium tartrate（KNaTar）,was examined as a corrosion *** loss tests show inhibition efficiency of 71.7% with Ce（NO3）3and 88.7% with CeTar inhibitor for one-month exposure to mild steel in 7 g/L NaCl *** inhibition efficiency drops to 28.6% with the fo rmer and remains around 8 7% with the latter inhibitor after six months of *** results from electrochemical testing indicate that the inhibition efficiency decreases by adding cerium ***,the cerium tartrate inhibitor demonstrates a nearly constant inhibition efficiency for up to 30 d,i.e.,≈90%.Electrochemical impedance spectroscopy（EIS） performed in these cases shows the following results:（ⅰ） with cerium nitrate,a film of iron and cerium oxide,which on prolonged exposure diminishes,and（ⅱ） with cerium tartrate,the formation of a bimetallic film（Fe-tartrate-Ce） and a mixture of cerium hydroxide and iro n oxide that protects steel for a longer *** inferences are based on the analyses of scanning electron microscopy/energydispersive X-ray analysis（SEM/EDAX）,X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,X-ray photoelectron（XPS）,and Raman spectroscopy results.

关键词： Cerium nitrate Cerium tartrate Corrosion inhibition Inhibitor film characterization Mild steel Rare earths

REFINING BEHAVIOUR OF BAMBOO LONG FIBRE FRACTION PULP

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天津科技大学学报 2004年第A2期19卷 41-46页

作者： Nishi K. Bhardwaj S.V. Subrahmanyam A. G. Kulkarni DirectorCentral Pulp and Paper Research Institute Saharanpur - 247 001 INDIA Scientist&CorrespondingauthorDirectorCentral Pulp and Paper Research Institute Saharanpur - 247 001 INDIA Seniors cientistDirectorCentral Pulp and Paper Research Institute Saharanpur - 247 001 INDIA

Refining of pulp significantly contributes to papermaking process by affecting the runnability of the stock and quality of end product. The greater the production rates of a paper, the greater are the effects of machine downtime through breaks. A correct approach towards refining treatment is very essential for energy savings and product with desired properties. Papermakers are being encouraged to use non-wood fibres for a variety of reasons - the environment, changing agricultural policy and long-term fibre supply. Compared with wood fibres, there is less knowledge on how to treat non-wood fibres for optimum performance. Laboratory studies aimed at understanding the behaviour of unbleached bamboo long fibre fraction pulp on refining in Escher Wyss Laborefiner under simulated process conditions included investigations of the important parameters like wet web tensile, wet web elongation, water retention value and paper strength properties. The paper describes the influence of two specific edge loads, 1000 and 1500 Ws/km on refining of pulp. Bamboo long fibre fraction pulp responds better to lower intensity refining to develop pulp strength.

关键词：精练水滞留值竹纸浆湿网长度馏分制浆长纤维

REFINING BEHAVIOUR OF BAMBOO LONG FIBRE FRACTION PULP

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天津科技大学学报 2004年第S2期 41-46页

作者： Nishi K. Bhardwaj,S.V. Subrahmanyam,A. G. Kulkarni DirectorCentral Pulp and Paper Research Institute saharanpur - 247 001 india Scientist&Correspondingauthor DirectorCentral Pulp and Paper Research Institute saharanpur - 247 001 india seniors cientist DirectorCentral Pulp and Paper Research Institute saharanpur - 247 001 india

关键词： Bamboo pulp Long fibre Refining Wet web strength Water retention value.

WET STRENGTH PAPER REPULPING: LABORATORY EVALUATION

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天津科技大学学报 2004年第A2期19卷 226-232页

作者： Nishi K. Bhardwaj Vikas Rajan A. G. Kulkarni Scientist (Ex) & Corresponding author Director Central Pulp and Paper Research Institute Saharanpur - 247 001 INDIAAsstt. Scientist (Ex)Director Central Pulp and Paper Research Institute Saharanpur - 247 001 INDIADirector Central Pulp and Paper Research Institute Saharanpur - 247 001 INDIA

The recycling of wet strength papers in a normal recycling mill is often troublesome due to the severe operating conditions required to defibre wet strength papers. The various methods are presented which will quickly allow mills to determine the most effective pulping aids to use when repulping wet strength papers. The repulping of wet strength paper with inorganic chemicals was investigated in the laboratory. The effects of major variables, that is, repulping time, pulp consistency, soaking time, temperature, and reactant concentration in the repulping stage were examined using Plackett-Burman design. The repulping time was the most crucial & influential process variable affecting repulping characteristic and formation related properties. The more significant repulping process variables affecting pulp yield were repulping time, soaking temperature and pulp consistency whereas for formation index and feature size, repulping time, pulp consistency, soaking temperature and time were the more important variables. The formation index is increased by an increase in repulping time, pulp consistency and soaking time whereas the feature size is decreased by an increase in repulping time, soaking temperature and pulp consistency. The formation index and the rejects were more sensitive to changes in process variables than were the feature size or the pulp yield. The pulp recycled from wet strength waste paper had good physical strength properties.

关键词：实验室评估再制浆湿润强度纸无机化学浸水时间废纸回收利用

WET STRENGTH PAPER REPULPING: LABORATORY EVALUATION

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天津科技大学学报 2004年第S2期 229-235页

作者： Nishi K. Bhardwaj,Vikas Rajan,A. G. Kulkarni Scientist (Ex) & Corresponding author Director Central Pulp and Paper Research Institute saharanpur - 247 001 india Asstt. Scientist (Ex)Director Central Pulp and Paper Research Institute saharanpur - 247 001 india Director Central Pulp and Paper Research Institute saharanpur - 247 001 india

关键词： Wet strength wet strength paper waste paper repulping recycling.

Wave Interaction and Resonance in a Non-Ideal Gas

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Chinese Physics Letters 2012年第12期29卷 5-8页

作者： Rajan Arora Mohd.Junaid Siddiqui V.P.Singh Department of Applied Science and Engineering IIT RoorkeeSaharanpur CampusSaharanpurUP-247001India

The method of multiple time scales is used to obtain the asymptotic solutions to the planar and non-planar flows into a non-ideal *** transport equations for the amplitudes of resonantly interacting high frequency wav... 详细信息

关键词： resonant planar asymptotic

Transport hindrances with electrodialytic recovery of citric acid from solution of strong electrolytes

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Chinese Journal of Chemical Engineering 2018年第2期26卷 278-292页

作者： Anusha Chandra Jogi Ganesh Dattatreya Tadimeti Sujay Chattopadhyay Department of Polymer and Process Engineering.IIY Roorkee saharanpur Campus Saharanpur 247001.India Department of Mechanical Engineering Swarnandhra College of Engineering and Technology Seetammpuram 534280.India

Electrodialytic （ED） recovery of citric acid （CA） in the presence/absence of strong electrolytes （NaCl, CaCl2 and Feel3） was separately analyzed under different process conditions. Recovery effectiveness was quantitatively estimated from current efficiency values. Efficiency attained optimum value with both flow rate and potential applied, while a monotonic rise was noted with temperature which got lowered beyond 0.1 tool. L 1 feed concentration. 40% drop in efficiency was recorded in the presence of strong electrolytes （Noel, CaCl2 and Feel3） in feed relative to their presence in concentrate. Severe transport hindrance and efficiency loss were attributed to adsorption and allied physicochemical changes occurred with anion/cation exchange membranes （AEM/CEM） and these were confirmed through contact angle/Chronopotentiometry/AFM/EDX. Sluggish potential rise （Galvanostatic mode） in Chronopotentiometric analysis indicated diffusion limiting transport of organic acids influenced AEM resistance. XRD and EDX analysis indicated the presence of salt hydrates/ions （Ca2＋/Fe3＋） over CEM justifying the resistance buildup due to adsorption of multivalent metal ion（s） and salts.

关键词： Electrodialysis Adsorption Electrolytes Recovery Chronopotentiometry AFM

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Utility of starchy,lignocellulosics and cellulosics hydrolysates on cellulase production under liquid state fermentation

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Waste Disposal and Sustainable Energy 2019年第4期1卷 289-299页

作者： Nitin Verma Vivek Kumar M.C.Bansal Department of Paper Technology Indian Institute of TechnologyRoorkee Saharanpur CampusSaharanpurUttar Pradesh 247001India

Starch is one of the most abundant renewable carbohydrate reserves of higher *** can be used to produce many valuable food products in the food processing ***,starch is also used as an important feedstock in the fermentation industry to produce value-added *** materials such as agriculture and forestry wastes are considered as a renewable feedstock for bioenergy production through a biochemical conversion *** lignocellulosic biomass into fuels and chemicals entail a physicochemical pretreatment of the biomass,followed by enzymatic hydrolysis of the polysaccharide components such as cellulose and hemicellulose into monomeric *** sugars can then be further fermented into other desired compounds of *** the deconstruction processes,various inhibitory compounds are released due to the partial over-degradation of lignocellulose biomass,which inhibits the cell growth and metabolic capacity of fermenting *** materials such as waste paper in large quantities can also be used as potentially cheap feedstock for sustainable production of value-added *** present investigation is mainly focused on the utility of starchy hydrolysates(wheat,potato,and rice)and lignocellulosics hydrolysates(bagasse and wheat straw)in cellulase production under liquid state *** also depicts the potential of cellulosic hydrolysate(waste newspaper)in product formation.

关键词： Starch hydrolysate Bagasse hydrolysate Wheat straw hydrolysate Waste newspaper hydrolysate Cellulases

BORON:an ultra-lightweight and low power encryption design for pervasive computing

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Frontiers of Information Technology & Electronic Engineering 2017年第3期18卷 317-331页

作者： Gaurav BANSOD Narayan PISHAROTY Abhijit PATIL Pune Institute of Computer Technology Pune 411043India Glocal University Saharanpur 247121India Symbiosis Institute of Technology Pune 412115India

We propose an ultra-lightweight, compact, and low power block cipher BORON. BORON is a substitution and permutation based network, which operates on a 64-bit plain text and supports a key length of 128/80 bits. BORON has a compact structure which requires 1939 gate equivalents(GEs) for a 128-bit key and 1626 GEs for an 80-bit key. The BORON cipher includes shift operators, round permutation layers, and XOR operations. Its unique design helps generate a large number of active S-boxes in fewer rounds, which thwarts the linear and differential attacks on the cipher. BORON shows good performance on both hardware and software platforms. BORON consumes less power as compared to the lightweight cipher LED and it has a higher throughput as compared to other existing SP network ciphers. We also present the security analysis of BORON and its performance as an ultra-lightweight compact cipher. BORON is a well-suited cipher design for applications where both a small footprint area and low power dissipation play a crucial role.

关键词： Lightweight cryptography SP network Block cipher Internet of Things(Io T) Encryption Embedded security

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Mathematical model to investigate the effect of design and process parameters on nip width of supercalender

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第4期5卷 158-169页

作者： Neel Kanth A.K.Ray Riti Department of Mathematics JayPee University of Information Technology Waknaghat SolanHPIndia IIT Roorkee saharanpur Campus UPIndia DAVS Lakkar BazaarShimlaHPIndia

Calendering is an important operation in pulp and paper mill,with an objective to increase the smoothness or reduce the roughness of *** calendering operation in paper machine,paper of desired quality cannot be *** the present investigation,a nip mechanics model for supercalendering has been developed by expand-ing Meijers nip mechanics model up to fourth term,and using this model the effect of additional fourth term and various design and process parameters on results of super-calendering has been discussed using the data taken from paper industry.

关键词： Nip mechanics nip width nip load dwell time nonhertzian contact