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广义B样条曲线节点插入算法及其应用

武汉理工大学学报 2010年第2期32卷 120-124页

作者：张硕孟宪瑞李娜娜天津师范大学津沽学院天津300387 河北理工大学理学院唐山063009 唐山学院唐山063020

通过研究二阶常系数微分算子的零空间及其初值问题解的唯一性,引入了广义B样条曲线的概念,给出了B样条曲线的一种统一表示形式,介绍了该样条的求值算法及节点插入算法,并以多项式B样条为例,将样条曲线的求值算法和节点插入算法推广到曲... 详细信息

通过研究二阶常系数微分算子的零空间及其初值问题解的唯一性,引入了广义B样条曲线的概念,给出了B样条曲线的一种统一表示形式,介绍了该样条的求值算法及节点插入算法,并以多项式B样条为例,将样条曲线的求值算法和节点插入算法推广到曲面。最后给出了相应算例。数值实验表明,求值算法和节点插入算法对样条曲线和样条曲面均准确、有效。利用广义B样条曲线在2个方向上取不同类型的样条曲线,构造了特殊曲面。

关键词：广义B样条曲线求值算法节点插入算法特殊曲面

Pyrolysis behaviour and kinetic analysis of waste polylactic acid composite reinforced with reed straw processing residue

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Carbon Resources Conversion 2024年第3期7卷 74-83页

作者： Bo Chen Sen Ma Sachin Kumar Zhitong Yao Wanqi Feng Jianbo Zhao Xu zhang Di Cai Hui Cao Ian Watson Systems Power and Energy Research DivisionJames Watts School of EngineeringCollege of Science and EngineeringJames Watt SouthUniversity of GlasgowGlasgow G128QQUnited Kingdom college of Life science and Technology Beijing University of Chemical TechnologyBeijing 100029PR China college of Energy State Key Laboratory of Physical Chemistry of Solid SurfacesXiamen UniversityXiamen 361102PR China Department of Energy Engineering Centre of Excellence-Green and Efficient Energy Technology(CoE-GEET)Central University of JharkhandRanchi 835205India college of Materials science and Environmental Engineering Hangzhou Dianzi UniversityHangzhou 310018PR China college of Chemistry and Chemical Engineering Tarim UniversityAlarXinjiang 843300PR China National Energy R&D Center for Biorefinery Beijing University of Chemical TechnologyBeijing 100029PR China

The lignocellulose reinforced composites are commonly used sustainable materials with good mechanical and physical *** to properly dispose and recover the potential value of discarded lignocellulose reinforced composites,the pyrolysis behaviour and kinetics of reed straw processing residual/polylactic acid(RSPR/PLA)composites,a typical 3D printing material,was *** on the TG-FTIR results,the synergistic effects between RSPR and PLA during the pyrolysis process were *** with the FTIR spectra of PLA,the absorption peaks of CO and CO_(2)disappear in the FTIR spectra of RSPR/PLA composite,which indicates RSPR provides additional free radicals for the free radical reaction of PLA,and further promoting the *** apparent activation energy of the RSPR/PLA composite pyrolysis was calculated by two iso-conversional methods including Flynn-Wall-Ozawa(FWO)and Kissinger-Akahira-Sunose(KAS).The average Ea of the RSPR/PLA composite(122.6 kJ mol^(-1)(FWO)and 117.9 kJ mol^(-1)(KAS))was lower than that of solo pyrolysis of RSPR(138.5 kJ mol^(-1)(FWO)and 135.4 kJ mol^(-1)(KAS))and the pure PLA(197.0 kJ mol^(-1)(FWO)and 196.6 kJ mol^(-1)(KAS)).The master plot method results suggested the pyrolysis of RSPR/PLA composite followed the one-dimensional(D1)diffusion *** work provides an environmentally friendly strategy to effective thermo-chemical upgrading of the value of discarded lignocellulose reinforced composite material.

关键词： Biobased composite Pyrolysis conversion Synergy Bio-oil Reaction kinetics

Expression of Auto-antiboby in Patients wih Acute Pancreatitis and its Clinical Significance

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Journal of Huazhong university of science and Technology(Medical sciences) 2003年第1期23卷 32-34页

作者：张进祥郑启昌崔天盆 DepartmentofSurgeryXieheHospital TongjiMedicalCollegeHuazhongUniversityofScienceandTechnology DepartmentofLaboratory XieheHospitalTongjiMedicalCollegeHuazhongUniversityofScienceandTechnology

The expression of an auto-antibody in patients with edematous acute pancreatitis and its possible clinical significance was investiaged. Eighteen cases of acute pancreatitis were chosen as experimental group and 25 subjects served as control group. Venous blood samples were taken in both groups at 4 time points: at the day of admission, the 2nd, 4th and 7th day of hospitalization. By using indirect immuno-fluorescence tests the expression of auto-antibody in the samples was semiquantitatively detected. Other biochemical indexes, such as serum amylase, urine amylase, were determined simultaneously. As well, the clinical signs or symptoms were mornitored. It was found that the expression of the auto-antibody was gradually enhanced with the development of acute pancreatitis. The inceased positive expression of auto-antibody showed a correlationship with the improvement of biochemical indexes (r=0.951) and clinical manifestations (r=0.996). There was significant difference between experimental and control groups (P<0.05). During the recovery period of acute pancreatitis, gradually increased auto-antibody expression was detectable. This antibody is against the interstitial structure of the pancreas.

关键词： auto-antibody acute pancreatitis indirect immuno-fluorescence test

Force model in electrostatic atomization minimum quantity lubrication milling GH4169 and performance evaluation

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Frontiers of Mechanical Engineering 2024年第4期19卷 55-72页

作者： Min YANG Hao MA Zhonghao LI Jiachao HAO Mingzheng LIU Xin CUI Yanbin zhang Zongming ZHOU Yunze LONG Changhe LI School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China college of Physics QingdaoUniversityQingdao 266071China Hanergy Lubrication Technology Co. Ltd.Qingdao 266200China

The nickel-based high-temperature alloy GH4169 is the material of choice for manufacturing critical components in aeroengines,and electrostatic atomization minimum quantity lubrication(EMQL)milling represents a fundamental machining process for ***,the effects of electric field parameters,jet parameters,nozzle position,and milling parameters on milling performance remain unclear,which constrains the broad application of EMQL in aerospace *** study evaluated the milling performance of EMQL on nickel-based alloys using soybean oil as the lubrication *** revealed that compared with conventional pneumatic atomization MQL milling,EMQL reduced the milling force by 15.2%-15.9%,lowered the surface roughness by 30.9%-54.2%,decreased the average roughness spacing by 47.4%-58.3%,and decreased the coefficient of friction and the specific energy of cutting by 55%and 19.6%,*** optimization experiments using orthogonal arrays demonstrated that air pressure most significantly affected the milling force and specific energy of cutting,with a contribution rate of 22%,whereas voltage had the greatest effect on workpiece surface roughness,contributing 36.71%.Considering the workpiece surface morphology and the potential impact of droplet drift on environmental and health safety,the optimal parameter combination identified were a flow rate of 80 mL/h,an air pressure of 0.1 MPa,a voltage of 30 kV,a nozzle incidence angle of 35°,an elevation angle of 30°,and a target distance of 40 *** research aimed to provide technical insights for improving the surface integrity of aerospace materials that are difficult to machine during cutting operations.

关键词： electrostatic atomization MQL nickel-based alloys milling force surface roughness force model

Treatment and prevention of natural heartworm(Dirofilaria immitis)infections in red pandas(Ailurus fulgens)with selamectin and ivermectin

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Treatment and prevention of natural heartworm(Dirofilaria im...

IQGAP3 promotes the progression of glioma as an immune and prognostic marker

中国畜牧兽医学会家畜寄生虫学分会第六次代表大会暨第十一次学术研讨会

作者： Lan Jingchao~(a1),Fu Yan~(b1),Yang Zhi~a,zhang Zhihe~a,Wang Chengdong~a,Luo Li~a,Liu Li~a,Gu Xiaobin~b,Wang Shuxian~b,Peng Xuerong~c,Yang Guangyou~(b*) a Chengdu Research Base of Giant Panda Breeding,Chengdu 610081,china b Department of Parasitology,college of Veterinary Medicine,Sichuan agricultural university,Ya’an 625014,china c Department of Chemistry,college of Life and Basic science,Sichuan agricultural university,Ya’an 625014,china.

10 of 48 red pandas in the Chengdu Research Base of Gian:Panda Breeding,Sichuan province, china,died in 2006 after prolonged periods of depression,weight loss,and mucocutaneous membrane *** the postmortem examination,live heartworms were found in right ventricles and pulmonary arteries of all 10 *** and ivermectin was used for clinical prophylaxis in the red pandas from December 2006 to November 2010.A gradual decrease in morbidity and mortality was observed during this *** a consequence of the prophylaxis program,dirofilariosis did not occur in the red pandas at the Chengdu Research Base during the 2010 year.

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Oncology Research 2024年第4期32卷 659-678页

作者： XIAOFENG GAO JUANJUAN GE XUZHENG GAO NA MEI YANTING SU SHIGANG SHAN WENBIN QIAN JIANGHENG GUAN ZHENWANG zhang LONG WANG Hubei Provincial Key Laboratory of Diabetic Cardiovascular Diseases Xianning Medical CollegeHubei University of Science and TechnologyXianning437100China School of Stomatology and Ophthalmology Xianning Medical CollegeHubei University of Science and TechnologyXianning437100China School of Basic Medical sciences Xianning Medical CollegeHubei University of Science and TechnologyHubei University of Science and TechnologyXianning437100China School of Pharmacy Xianning Medical CollegeHubei University of Science and TechnologyXianning437100China Department of Neurosurgery The General Hospital of Chinese PLA Central Theater CommandWuhan430070China

Background:IQGAP3 plays a crucial role in regulating cell proliferation,division,and cytoskeletal *** expression of IQGAP3 has been linked to various tumors,but its function in glioma is not well ***:Various methods,including genetic differential analysis,single-cell analysis,ROC curve analysis,Cox regression,Kaplan-Meier analysis,and enrichment analysis,were employed to analyze the expression patterns,diagnostic potential,prognostic implications,and biological processes involving IQGAP3 in normal and tumor *** impact of IQGAP3 on immune infiltration and the immune microenvironment in gliomas was evaluated using ***,the cBioPortal database was used to analyze copy number variations and mutation sites of *** validation was also performed to assess the effects of IQGAP3 on glioma cells and explore underlying ***:High IQGAP3 expression in gliomas is associated with an unfavorable prognosis,particularly in wild-type IDH and 1p/19q non-codeleted *** analysis revealed that IQGAP3 is involved in regulating the cell cycle,PI3K/AKT signaling,p53 signaling,and PLK1-related ***,IQGAP3 expression may be closely related to the immunosuppressive microenvironment of ***-K88742110 and LY-303511 are potential drugs for targeting IQGAP3 in anti-glioma *** vitro experiments showed that downregulation of IQGAP3 inhibits the proliferation and migration of glioma cells,with the PLK1/PI3K/AKT pathway potentially playing a crucial role in IQGAP3-mediated glioma ***:IQGAP3 shows promise as a valuable biomarker for diagnosis,prognosis,and immunotherapeutic strategies in gliomas.

关键词： IQGAP3 Tumor immune infiltration Prognosis Glioma Biomarker

基于时延Petri网的密码协议分析及性能评估

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计算机工程与应用 2003年第30期39卷 158-161页

作者：张广胜山东科技大学信息科学与工程学院山东泰安271019

形式化分析方法由于其精炼、简洁和无二义性逐步成为分析密码协议的一条可靠和准确的途径,但是密码协议的形式化分析研究目前还不够深入,针对这一现状,该文提出用时延Petri网来表示和分析密码协议。该模型不但能够反映协议的静态和动态... 详细信息

形式化分析方法由于其精炼、简洁和无二义性逐步成为分析密码协议的一条可靠和准确的途径,但是密码协议的形式化分析研究目前还不够深入,针对这一现状,该文提出用时延Petri网来表示和分析密码协议。该模型不但能够反映协议的静态和动态的特性,而且能够对密码协议进行时间、空间上的性能评估。作为实例,文章对MSR无线协议作了详细的形式分析和性能评估。最后,与其它形式化分析密码协议的方法作了比较。

关键词：密码协议形式化分析时延Petri网 BAN逻辑认证协议

On-line Scheduling with Rejection on Uniform Machines

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On-line Scheduling with Rejection on Uniform Machines

Prediction of the Extreme Values and the OptimalRatios of Triple Jump Based on the Grey System Theory

中国运筹学会第七届学术交流会

作者： Shoupeng Liu Yuzhong zhang college of Operations Research and Management science,Qufu Normal university, Rizhao, Shangdong, 276826

In this paper we consider the problem of on-line scheduling of unit exectiontime jobs on uniform machines with rejection *** jobs arrive one by one andcan be either accepted and scheduled, or be rejected. The objective is to minimize thetotal completion time of the accpted jobs and the total penalty of the rejection *** propose an on-line algorithm and prove that the competitive ratio is 1/2(2 +3) ≈1.86602.

关键词： On-line scheduling Competitive ratio Uniform machines

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Systems science and Systems Engineering 1999年第1期9卷 40-50页

作者： XU Ming(Department of physical Education, P.O.Boxl-36, Leshan, Sichuan, 614802, china)zhang Feng(Foreign Languages Deaprtment of Leshan Teachers college, Leshan, Sichuan, 614000, china)CHANG C.A.(Department of physics, university of Western Ontario, Lond

We have applied the grey system theory to study triple jumps. In this Paper we introducethe grey system theory, apply it to establish a monotonic sequence nonlinear Verhulst differentialdynamic model. Using that model and the triple jump records in recent 45 years we calculate thefuture extreme values of world triple jump, predict the optimal apportionment among the three phases,and study the tendency of development of triple jumP techniques and strategy. Every event has itsown development, maturity and peak periods. Our study helps coaches and athletes to develop theirstrategy on a scientific base. Based on the grey system theory we predict that the record of worldtriple jump will finally approach 20.65m. The distance of hop, step, and jump will approach 7.56m,6.06m, and 7.03m respectively. The apportionment will approach 36.6% for hop. 29.4% for step, and34.00% for jump. According to our calculation the tendency of development is to follow the model ofthe Russian style basically, and at the same time to absorb the advantage of the Polish style to place agreater emphasis on the distance of the distance of the third phase.

关键词： grey theory extreme value triple jump