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CeTrivium:A Stream Cipher Based on Cellular Automata for Securing Real-Time Multimedia Transmission

Computer Systems Science & Engineering 2023年第12期47卷 2895-2920页

作者： Osama S.Younes Abdulmohsen Alharbi ali Yasseen Faisal Alshareef Faisal Albalawi Umar A.Albalawi Faculty of Computer and Information Technology University of TabukTabuk71491Saudi Arabia Faculty of Computers and Information Menoufia UniversityMenoufia13829Egypt School of Computing&Data Science Wentworth Institute of TechnologyBoston02115USA

Due to their significant correlation and redundancy,conventional block cipher cryptosystems are not efficient in encryptingmultimedia *** based onCellularAutomata(CA)can provide amore effective *** CA have recently gained recognition as a robust cryptographic primitive,being used as pseudorandom number generators in hash functions,block ciphers and stream *** have the ability to perform parallel transformations,resulting in high throughput ***,they exhibit a natural tendency to resist fault *** stream cipher schemes based on CA have been proposed in the ***,their encryption/decryption throughput is relatively low,which makes them unsuitable formultimedia *** and Grain are efficient stream ciphers that were selected as finalists in the eSTREAM project,but they have proven to be vulnerable to differential fault *** work introduces a novel and scalable stream cipher named CeTrivium,whose design is based on *** is a 5-neighborhood CA-based streamcipher inspired by the designs of Trivium and *** is constructed using three building blocks:the Trivium(Tr)block,the Nonlinear-CA(NCA)block,and the Nonlinear Mixing(NM)*** NCA block is a 64-bit nonlinear hybrid 5-neighborhood CA,while the Tr block has the same structure as the Trivium stream *** NM block is a nonlinear,balanced,and reversible Boolean function that mixes the outputs of the Tr and NCA blocks to produce a *** of CeTrivium has indicated that it can resist various attacks,including correlation,algebraic,fault,cube,Meier and Staffelbach,and side channel ***,the scheme is evaluated using histogramand spectrogramanalysis,aswell as several differentmeasurements,including the correlation coefficient,number of samples change rate,signal-to-noise ratio,entropy,and peak signal-to-noise *** performance of CeTrivium is evaluated and compared with other state-of-

关键词： Stream ciphers cellular automata securing real-time streaming cryptography CeTrivium

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Fiber-reinforced composites in milling and grinding:machining bottlenecks and advanced strategies

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Frontiers of Mechanical Engineering 2022年第2期17卷 1-35页

作者： Teng GAO Yanbin ZHANG Changhe LI Yiqi WANG Yun CHEN Qinglong AN Song ZHANG Hao Nan LI Huajun CAO Hafiz Muhammad ali Zongming ZHOU Shubham SHARMA School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China School of Mechanical Engineering Dalian University of TechnologyDalian 116024China Chengdu Tool Research Institute Co. Ltd.Chengdu 610500China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Mechanical Engineering Shandong UniversityJinan 250061China School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China School of Mechanical Engineering Chongqing UniversityChongqing 400044China Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266100China Department of Mechanical Engineering IK Gujral Punjab Technical UniversityPunjab 144603India

Fiber-reinforced composites have become the preferred material in the fields of aviation and aerospace because of their high-strength performance in unit *** composite components are manufactured by near netshape and only require finishing operations to achieve final dimensional and assembly *** and grinding arise as the preferred choices because of their precision ***,given their laminated,anisotropic,and heterogeneous nature,these materials are considered *** undesirable results and challenging breakthroughs,the surface damage and integrity of these materials is a research hotspot with important engineering *** review summarizes an up-to-date progress of the damage formation mechanisms and suppression strategies in milling and grinding for the fiber-reinforced composites reported in the ***,the formation mechanisms of milling damage,including delamination,burr,and tear,are ***,the grinding mechanisms,covering material removal mechanism,thermal mechanical behavior,surface integrity,and damage,are ***,suppression strategies are reviewed systematically from the aspects of advanced cutting tools and technologies,including ultrasonic vibration-assisted machining,cryogenic cooling,minimum quantity lubrication(MQL),and tool optimization *** vibration shows the greatest advantage of restraining machining force,which can be reduced by approximately 60%compared with conventional *** cooling is the most effective method to reduce temperature with a maximum reduction of approximately 60%.MQL shows its advantages in terms of reducing friction coefficient,force,temperature,and tool ***,research gaps and future exploration directions are prospected,giving researchers opportunity to deepen specific aspects and explore new area for achieving high precision surface machining of fiber-reinforced composites.

关键词： milling grinding fiber-reinforced composites damage formation mechanism delamination material removal mechanism surface integrity minimum quantity lubrication

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Temperature dependence of nitrogen mineralization and microbial status in O_H horizon of a temperate forest ecosystem

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Journal of Forestry Research 2008年第1期19卷 37-43页

作者： ali Bagherzadeh Rainer Brumme Friedrich Beese Department of Agriculture Azad University of MashhadEmamyeh Boulevard Institute of Soil Science and Forest Nutrition Georg-August-University of GoettingenBuesgenweg 237077 GoettingenGermany

It was hypothesized that increasing air and/or soil temperature would increase rates of microbial processes including litter decomposition and net N mineralization, resulting in greater sequestration of carbon and nitrogen in humus, and consequently development in OH horizon （humus horizon）. To quantify the effect of temperature on biochemical processes controlling the rate of OH layer development three adjacent forest floors under beech, Norway spruce and mixed species stands were investigated at Soiling forest, Germany by an incubation experiment of OH layer for three months. Comparing the fitted curves for temperature sensitivity of OH layers in relation to net N mineralization revealed positive correlation across all sites. For the whole data set of all stands, a Q10 （temperature sensitivity index） value of 2.35-2.44 dependent on the measured units was found to be adequate for describing the temperature dependency of net N mineralization at experimental site. Species-specific differences of substrate quality did not result in changes in biochemical properties of OH horizon of the forest floors. Temperature elevation increased net N mineralization without significant changes in microbial status in the range of I to 15℃. A low Cmic /Corg （microbial carbon/organic carbon） ratio at 20℃ indicated that the resource availability for decomposers has been restricted as reflected in significant decrease of microbial biomass.

关键词： beech spruce nitrogen mineralization forest floor temperature temperature sensitivity index (Q10)

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CENTENNIAL CPC ACHIEVES MIRACLES IN CHINA,BOOSTS WORLD HARMONY,SAYS PAKISTANI EXPERT

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Good Neighbours 2022年第1期 54-55页

作者： ali Jaswal Jiang Chao Xinhua reporters

Since its founding 10o years ago,the Communist Party of China(CPC)has led China to achieve fast and remarkable socio-economic progress,a wonder of the human society,a Pakistani expert has *** reasons behind these accomplishments are the CPC's people-centered policies and its accurate grasp of the pulse of the times,Fazal Ur Rahman,director of Pakistan Institute of China Studies at the University of Sargodha told Xinhua in a recent interview.

关键词：中国研究中心经济奇迹始终坚持拉赫曼巴基斯坦奉献精神时代前列人民至上

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Oxygen-doped Carbon Nitride Nanocages with Efficient Photon-to-Electron Conversion for Selective Oxidation of Xylose/Xylan to Yield Xylonic Acid

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Paper And Biomaterials 2023年第2期8卷 53-65页

作者： Junqiang Zhang Zhuoyan Xie Zulfiqar ali Ning Li Qimeng Liu Wenyue Fan Jiliang Ma Runcang Sun Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefineryCollege of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalianLiaoning Province116034China

Highly efficient photon-to-electron conversion is crucial for achieving photocatalytic *** this study,oxygen-doped carbon nitride nanocages(O@CNNCs)were engineered via dual strategies of morphology-controlled heteroatom doping,which was successfully used in the photocatalytic selective oxidation of xylose/xylan to xylonic *** nanocage-shaped O@CNNCs had a larger surface area,which was 4.02 times of carbon nitride(CN).Furthermore,with the assistance of morphology regulation and O-doping,O@CNNCs exhibit highly efficient photon-to-electron conversion,enhanced visible-light utilization,high photocurrent,low resistance,and fast separation/migration of electron-hole ***,the photocatalytic oxidation of xylose to xylonic acid using O@CNNCs was successfully achieved under mild reaction conditions with a yield of 83.4%.O@CNNCs have excellent recyclability,in which the yield of xylonic acid in the 5th cycle was 98.2%of its initial *** O@CNNC photocatalytic system was also suitable for macromolecular xylan,and a xylonic acid yield of 77.34 mg was obtained when 100 mg xylan was *** oxidation-active species captured experiments indicated that holes were crucial for the selective oxidation of xylose to xylonic ***,this study provides a new strategy for the preparation of photocatalysts with excellent photon-to-electron conversion and selective oxidation of biomass-derived feedstocks to xylonic acid.

关键词： photon-to-electron conversion morphology regulation oxygen doping selective oxidation xylonic acid

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碱蓬内生真菌曲霉TQ67次级代谢产物的研究

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中国药学杂志 2018年第7期53卷 504-507页

作者：吴斌 Sayed Asmat ali Shah 陶倩楠浙江大学海洋学院浙江舟山316021

目的研究植物碱蓬内生真菌曲霉TQ67次级代谢产物。方法采用ODS反相柱色谱、高效液相色谱、半制备HPLC等方法对发酵液及菌丝体部分分离纯化,运用核磁、质谱等现代波谱分析方法对化合物进行结构鉴定。结果得到8个化合物:aspermutarubrol(1... 详细信息

目的研究植物碱蓬内生真菌曲霉TQ67次级代谢产物。方法采用ODS反相柱色谱、高效液相色谱、半制备HPLC等方法对发酵液及菌丝体部分分离纯化,运用核磁、质谱等现代波谱分析方法对化合物进行结构鉴定。结果得到8个化合物:aspermutarubrol(1)、sydowiols D(2)、sydowiols E(3)、细交链孢酮酸(4)、(E)-5-(羟甲基)-2-(6'-甲基-2'-庚烯-2'-基)酚(5)、sydonol(6)、(7S)-(+)-7-O-methylsydonol(7)和hydroxysydonic acid(8)。化合物2/3和化合物1其DPPH的IC_(50)分别为(9.79±0.33)和(32.30±1.02)μg·mL^(-1),FRAP值分别为(230.55±2.50)和(278.99±8.32)μg·mL^(-1)。结论从碱蓬内生真菌曲霉TQ67中分离得到的化合物2/3和化合物1有较强的抗氧化活性。

关键词：碱蓬内生真菌次生代谢产物抗氧化

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LASIK治疗苏丹青少年难治性屈光参差性弱视(英文)

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国际眼科杂志 2009年第1期9卷 21-24页

作者： Kamal Hashim Binnawi Sara Mursi Nadir ali Mohamed ali 联邦卫生部国家防盲计划办公室苏丹喀士穆

目的:评价准分子激光原位角膜磨镶术(LASIK)联合遮盖疗法治疗青少年屈光参差性弱视的疗效,并将其与传统光学矫正联合遮盖疗法的疗效进行比较。方法:回顾性病例对照研究,屈光参差性弱视患者19例,年龄10～17岁。A组包括患屈光参差性弱视... 详细信息

目的:评价准分子激光原位角膜磨镶术(LASIK)联合遮盖疗法治疗青少年屈光参差性弱视的疗效,并将其与传统光学矫正联合遮盖疗法的疗效进行比较。方法:回顾性病例对照研究,屈光参差性弱视患者19例,年龄10～17岁。A组包括患屈光参差性弱视的青少年10例,光学矫正联合遮盖疗法后,他们的视力不能改善。这些患者后接受LASIK联合遮盖疗法。B组包括年龄相匹配的屈光参差性弱视患者9例作为对照,他们适应光学矫正联合遮盖疗法。分析A组的术后视力,并与B组进行比较。结果:A组,术前平均球性屈光不正度数为-8.9±5.2D,术后为-1.9±2.0D;术前平均最佳矫正视力为0.25±0.18,治疗后提高至0.50±0.26。B组,治疗前平均最佳矫正视力为0.27±0.18,治疗后提高至0.50±0.28。两组治疗后最佳矫正视力相比较,无统计学差异。结论:对于经过传统的光学矫正联合遮盖疗法而不能提高视力的青少年屈光参差性弱视患者,LASIK为他们提供了一个可行的治疗方法,其治疗效果与传统疗法相当。

关键词：准分子激光原位角膜磨镶术屈光参差弱视青少年

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Temperature dependence of carbon mineralization and nitrous oxide emission in a temperate forest ecosystem

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Journal of Forestry Research 2008年第2期19卷 107-112页

作者： ali Bagherzadeh Rainer Brumme Friedrich Beese Department of Agriculture Azad University of Mashhad Emamyeh Boulevard P.O Box: 91735-413 Mashhad Iran Institute of Soil Science and Forest Nutrition Georg-August-University of Goettingen Buesgenweg 2 37077 Goettingen Germany

The measurement of CO2 and N2O effiux from forest soils is of great importance in evaluating the role of forests as sequestering agents of atmospheric CO2 and nitrogen. To quantify the effect of site on temperature dependence of net C-mineralization and N2O-N emissions, three adjacent forest floors under beech, Norway spruce and mixed species stands were investigated at Soiling forest, Germany, by an incubation experiment for three months. The investigated net C-mineralization and N2O-N emissions from all forest floors exhibited an exponential increase with respect to temperature elevation. The temperature coefficient function （Q10 value）, was fitted to flux rates to describe the temperature sensitivity of forest floors on temperature in the range of 1-20℃. Comparing the fitted curves for temperature sensitivity of the forest floors in relation to net carbon mineralization and nitrous oxide emission rates revealed a strong positive correlation across all sites. For the whole data set of all stands, a Q10 value of 1.73-2.10 for net C-mineralization and 2.81-3.58 for N2O-N emissions per measured unit was found to describe the temperature dependency of net C-mineralization and N20-N efflux at experimental site. The absence of clear differences between beech and spruce in mono and mixed species cultures on temperature dependencies of net C-mineralization and N2O-N emission rates indicated that the flux rates were not affected by species-specific differences of litter quality.

关键词： beech spruce net C-mineralization nitrous oxide emission temperature temperature sensitivity index (Q10)

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Efficacy of octreotide in the prevention of complications after pancreaticoduodenectomy in patients with soft pancreas and non-dilated pancreatic duct: A prospective randomized trial

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Hepatobiliary & Pancreatic Diseases International 2018年第1期17卷 59-63页

作者： Ayman El Nakeeb Ahmed El Gawalby Mahmoud A.ali Ahmed Shehta Hosam Hamed Mohamed El Refea Ahmed Moneer Ahmed Abd El Rafee Gastroenterology Surgical Center Mansoura University

Background: The efficacy of octreotide to prevent postoperative pancreatic fistula(POPF) of pancreaticoduodenectomy(PD) is still controversial. This study aimed to evaluate the effect of postoperative use of octreotide on the outcomes after ***: This is a prospective randomized controlled trial for postoperative use of octreotide in patients undergoing PD. Patients with soft pancreas and pancreatic duct ality(P = 0.727).Conclusions: Octreotide did not reduce postoperative morbidities, reoperation and mortality rate. Also, it did not affect the incidence of POPF and its clinically relevant variants.

关键词： Pancreaticoduodenectomy Postoperative pancreatic fistula Octreotide Periampullary tumor

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Antibacterial efficacy of the seed extracts of Melia azedarach against some hospital isolated human pathogenic bacterial strains

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Asian Pacific Journal of Tropical Biomedicine 2011年第6期1卷 452-455页

作者： Abdul Viqar Khan Qamar Uddin Ahmed M Ramzan Mir Indu Shukla Athar ali Khan Department of Botany Faculty of Life SciencesAligarh Muslim University Department of Pharmaceutical Chemistry Facully of PharmacyInternational Islamic University Malaysia Department of Microbiology Faculty of Life SciencesAligarh Muslim University

Objective:To investigate the antibacterial potential of the polar and non-polar extracts of the seeds of Melia azedarach(***) L.(Meliaceae) against eighteen hospital isolated human pathogenic bacterial ***:Petrol,benzene,ethyl acetate,methanol,and aqueous extracts at five different concentrations(1,2,5,10 and 15 mg/mL) were *** diffusion method was followed to evaluate the antibacterial ***:All extracts of the seeds demonstrated significant antibacterial activity against tested *** all extracts,ethyl acetate extract revealed the highest inhibition *** present study also favored the traditional uses reported ***:Results of this study strongly confirm that the seed extracts of *** could be effective antibiotics,both in controlling gram-positive and gram-negative human pathogenic infections.

关键词： Melia azedarach Antibacterial efficacy Pathogenic bacteria

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