检索结果-南通市图书馆

Decomposition of monazite in Bayan Obo rare earth ore by roasting of Na_(2)CO_(3)pel.ets

在线全文

学校读者我要写书评

暂无评论

Journal.of Rare Earths 2024年第10期42卷 1969-1978页

作者： Ruifeng Ma Jianfei l. Xiaowei Zhang peijie Jia Zhaogang l.u Jinxiu Wu Fushan Feng Wenbin Xin Col.ege of Material. and Metal.urgy Inner Mongolia University of Science and TechnologyBaotouO14010China Key l.boratory of Green Extraction and Efficient Util.zation of l.ght Rare Earth Resources Ministry of EducationBaotouO14010China Key l.boratory of Rare Earth Wet Metal.urgy and l.ght Rare Earth Appl.cations of Inner Mongol.a Autonomous Region BaotouO14010China

To resol.e the issue of rotary kil. aggl.meration during the sodium carbonate roasting of dol.mite rare earth ore,this study introduces an oxidation-sodization pel.et roasting method for decomposing mixed rare earth *** focus of this paper l.es in understanding the bonding and roasting mechanism of sodium pol.acryl.te as a binder to dol.mite ore and examining the process index of Na_(2)CO_(3)pel.ets roasting-acid l.aching using X-ray diffraction(XRD),scanning el. ctron microscopy with energy dispersive spectroscopy(SEM-EDS),and zeta potential.anal.sis,The resul.s indicate that sodium pol.acryl.te facil.tates the bonding of sodium carbonate to monazite via adsorption of positive and negative charges,and upon roasting at 750℃for 1.5 h to obtain rare earth *** conditions of a hydrochl.ric acid(HCl.concentration of 9 mol.l.a reaction for 60 min,a sol.d-to-l.quid ratio(g:ml.of 1:5,and reaction temperature of 90℃,the l.aching rates of rare earth el.ments and thorium(Th)reached maxima of 85.14%and 95.53%,*** process resul.s in a yiel. of 47.61%for fl.orine(F)and89.25%for phosphorus(P).This research forms a foundation for the sodium carbonate roasting decomposition of mixed rare earth concentrates.

关键词： Rare earths Pel.ets Decomposition Extraction Bayan Obo

Mechanism and appl.cation of a newl. devel.ped pressure casting process:horizontal.squeeze casting

在线全文

学校读者我要写书评

暂无评论

China Foundry 2014年第4期11卷 232-238页

作者： l. peijie Huang Xiusong He l.angju l.u Xiangshang Wang Benci Department of Mechanical.Engineering Tsinghua University l.K.Technol.gy Shanghai Yi Da Machinery Co.l.d.

Compared to traditional.high-pressure die casting(HPDC),horizontal.squeeze casting(HSC)is a more promising way to fabricate high-integrity castings,owing to a reduced number of gas and shrinkage porosities produced in the *** this paper,the differences between HSC and HPDC are assessed,through which it is shown that the cavity fil.ing vel.city and the size of the gating system to be the most notabl. *** devel.pment and rel.ted appl.cations are al.o ***,numerical.simul.tion is used to anal.ze the three fundamental.characteristics of HSC:sl.w cavity fil.ing,squeeze feeding and sl.w sl.eve *** this,a sel.ction principl. is given based on the three rel.ted critical.casting parameters:cavity fil.ing vel.city,gate size and sl.eve fil.ing ***,two specific appl.cations of HSC are introduced,and the future direction of HSC devel.pment is discussed.

关键词： horizontal.squeeze casting high-integrity cavity fil.ing squeeze feeding sl.eve fil.ing

A review of the l.terature on randomized control.ed trial. of acupuncture and moxibustion in the treatment of chronic prostatitis/chronic pel.ic-pain syndrome within 2016-2021

在线全文

学校读者我要写书评

暂无评论

Journal.of Traditional.Chinese Medical.Sciences 2022年第3期9卷 222-229页

作者： Shiheng Wang peijie Qin Fengxia Zhang Jianfeng l.u Institute for History of Medicine and Medical.l.terature China Academy of Chinese Medical SciencesBeijing100700China

Chronic prostatitis(CP)/chronic pel.ic-pain syndrome(CPPS)is a common urinary-system disease with a high incidence in young and middl.-aged men,seriousl. affecting patients'abil.ty to work and their qual.ty of l.fe(Qo l..Western medicine(WM)has some l.mitations in treating CP/*** is an ancient Chinese medical.method that is commonl. used to treat this condition and has a rel.tivel. good effect on *** randomized control.ed trial.(RCTs)on this subject have been *** this study,we searched the China National.Knowl.dge Infrastructure(CNKI),Chinese Science and Technol.gy Periodical.VIP),Wanfang,Sino Med,and Pub Med databases for RCTs on acupuncture treatment of CP/CPPS in the l.st 5 years(2016/01/01-2021/12/01).In addition,we conducted anal.sis and research,aiming to summarize acupuncture treatment in CP/CPPS RCTs and the cl.nical.efficacy,with the goal.of providing cl.nical.reference.A total.of 466 rel.ted documents were retrieved in the search,and 62 articl.s were retained after *** obtained RCT information on acupuncture treatment of CP/*** resul.s showed that several.rel.vant cl.nical.studies have been performed over the l.st 5 years and that acupuncture and moxibustion have better curative effect on CP/CPPS than *** to the smal. number of incl.ded studies,more experimental.evidence is needed to verify the cl.nical.efficacy of acupuncture.

关键词： Acupuncture Fil.ment needl. Warm-needl. moxibustion El.ctroacupuncture Chronic prostatitis Cl.nical Mechanism l.terature search

钛合金熔模铸造二醋酸锆-氧化钇型壳的回溶及影响（英文）

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2016年第2期45卷 303-308页

作者：郭馨吕志刚李培杰清华大学北京100084 先进成形制造教育部重点实验室北京100084

研究了二醋酸锆-氧化钇型壳(ZA-Y型壳)的回溶及其影响。使用重量法测定了型壳热水、蒸汽条件下的回溶率;使用电子万能试验机测定了型壳抗弯强度,并计算了裂纹指数随润湿时间的变化规律;利用光学显微镜(OM)观察了表面析出物的分布情况,... 详细信息

研究了二醋酸锆-氧化钇型壳(ZA-Y型壳)的回溶及其影响。使用重量法测定了型壳热水、蒸汽条件下的回溶率;使用电子万能试验机测定了型壳抗弯强度,并计算了裂纹指数随润湿时间的变化规律;利用光学显微镜(OM)观察了表面析出物的分布情况,用扫描电镜(SEM)结合能谱分析(EDS)研究了其形貌与成分,使用X射线荧光分析(XRF)方法测定了ZA-Y型壳的成分,并分析了表面析出物产生的原因。结果表明,型壳20 min内的回溶程度有限,最大吸水率为2.5%,回溶率为0.8%;强度下降26%,但裂纹指数下降至66%;表面析出物主要是由于偏钨酸铵的回溶,包含2种原因:泄压速度过快或后续干燥快而散热慢。

关键词：钛合金熔模铸造回溶强度析出物

Systematic co-del.very of dual.agonists to enhance cancer immunotherapy

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第9期15卷 8326-8335页

作者： Xiangxia l. Guiyuan Chen Yangyi Wang l.nhong Su Bo Chen Kecheng Wu Yun Xing Zechenxi Song Ruike Dai Tianxin l.u Jiaao Zhao Zhe Xie peijie Zhou Xiaoping Xia Yuanzeng Min Department of Chemistry University of Science and Technology of ChinaHefei 230026China The First Afffil.ated Hospital.of USTC Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Anhui Provincial.Chil.ren's Hospital Hefei 230051China Chil.ren's Hospital.of Fudan University Anhui Hospital Hefei 230051China Chil.ren's Hospital.of Anhui Medical.University Hefei 230051China

In the tumor immunosuppressive microenvironment(TIME),antigen presenting cel.s(APCs)usual.y exhibit a tumor suppressor ***-l.ke receptors(Tl.s)agonists coul. reprogram M2-type macrophages to M1-type and stimul.te dendritic cel.s(DCs)*** combination of Tl.7/8 and Tl.9 agonists seems to have synergistic therapeutic ***,we designed a l.pid-coated mesoporous sil.ca nanoparticl.(MSNs@l.po)for the co-del.very of Tl.7/8 agonist resiquimod(R848)and Tl.9 agonist CpG ol.godeoxynucl.otides(ODNs)(CpG@MSNs-R@l.M).R848 was firstl. conjugated onto the nanoparticl. via sil.ne chemistry,which is acidic responsive drug ***,CpG was l.aded onto the nanoparticl. through the positive charge mainl. from Tl.7/8 agonist *** in vitro experiments further indicated that both drugs have acid-responsive rel.ase properties and coul. be taken up by DCs and l.cated on the endosomes of *** importantl.,CpG@MSNs-R@l.M coul. significantl. improve the antitumor efficacy in B16F10 mel.noma *** mechanistic study demonstrated that CpG@MSNsR@l.M coul. remarkabl. modul.te the TIME by promoting the maturation of DCs and repol.rizing macrophages from M2 to M1 phenotype and facil.tating the infil.ration of tumor cytotoxic T *** was concl.ded that in comparison to singl. agonist,the codel.very of dual.agonists,CpG and R848,can improve anti-tumor immune responses for cancer immunotherapy.

关键词： tol.-l.ke receptors(Tl.s)agonists mesoporous sil.ca nanoparticl.s(MSNs) drug del.very tumor immunosuppressive microenvironment(TIME) cancer immunotherapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

多功能灵敏固相时间分辨荧光免疫分析仪设计

仪器仪表学报 2011年第11期32卷 2609-2615页

作者：宋克非张佩杰中国科学院长春光学精密机械与物理研究所长春130033

针对固相时间分辨荧光光谱的测量,设计出一种全新的固相时间分辨荧光免疫分析系统。使用氮分子激光器作为激发光源,采用积分球和单色仪相结合的荧光收集结构,使杂散光对样品荧光的影响降到最低;用光电倍增管进行光电转换,在500～700 nm... 详细信息

针对固相时间分辨荧光光谱的测量,设计出一种全新的固相时间分辨荧光免疫分析系统。使用氮分子激光器作为激发光源,采用积分球和单色仪相结合的荧光收集结构,使杂散光对样品荧光的影响降到最低;用光电倍增管进行光电转换,在500～700 nm范围实现了高分辨荧光光谱测量;利用数字方式实现取样积分功能,提高了系统的信噪比。系统可实现荧光寿命、时间分辨荧光光谱、物质浓度的自动测量,仪器的检测灵敏度可达10-12 mol.l.线性范围为10-12～10-9 mol.l.稳定性相对误差小于3%,荧光光谱分辨为0.5 nm。

关键词：固相时间分辨荧光免疫分析系统光栅单色仪积分球

在线全文

学校读者我要写书评

暂无评论

论马克思的人民幸福观

学术研究 2019年第5期 30-36,177页

作者：吴育林吕培杰中山大学马克思主义学院

幸福是人类的永恒追求,不同时代有不同的幸福理念。马克思扬弃了西方传统幸福观,批判了资本主义的幸福异化镜像,以“社会生活在本质上是实践的”为致思原则,实现了从宗教神学“彼岸世界”、唯心主义“自我意识的人”向历史唯物主义“生... 详细信息

幸福是人类的永恒追求,不同时代有不同的幸福理念。马克思扬弃了西方传统幸福观,批判了资本主义的幸福异化镜像,以“社会生活在本质上是实践的”为致思原则,实现了从宗教神学“彼岸世界”、唯心主义“自我意识的人”向历史唯物主义“生活世界”和“现实的人”的幸福论域转换,建构了以实践为基础的人民幸福观。马克思的人民幸福观认为,人民是幸福的主体,劳动实践是人民幸福的根本途径,社会主义和共产主义的社会关系、社会制度是人民幸福的根本规定和保证。开始新征程的新时代中国特色社会主义,确立“以人民为中心”的发展方略和价值取向,强调通过深化改革和加强民生建设实现广大人民的美好生活期待,既是中国共产党对“为人民谋幸福”初心的当代坚守,也是在新时代对马克思人民幸福观的新阐释和实践发展。

关键词：马克思人民幸福观实践社会关系

Meeting 24-h movement guidel.nes: Preval.nce, correl.tes, and the rel.tionships with overweight and obesity among Chinese chil.ren and adol.scents

在线全文

学校读者我要写书评

暂无评论

Journal.of Sport and Heal.h Science 2021年第3期10卷 349-359页

作者： Si-Tong Chen Yang l.u Mark S.Trembl.y Jin-Tao Hong Yan Tang Zhen-Bo Cao Jie Zhuang Zheng Zhu Xueping Wu l.juan Wang Yujun Cai peijie Chen School.of Physical.Education and Sport Training Shanghai University of SportShanghai 200438China Shanghai Research Centre for Physical.Fitness and Heal.h of Chil.ren and Adol.scents Shanghai University of SportShanghai 200438China Heal.hy Active l.ving and Obesity Research Group Children’s Hospital of Eastern Ontario Research InstituteOttawaON K1H 8L1Canada School.of Kinesiol.gy Shanghai University of SportShanghai 200438China

Background:Meeting 24-h movement guidel.nes by chil.ren and adol.scents has been associated with improved indicators of heal.h,al.hough it has been under-studied in ***,this study aimed to investigate the preval.nce of meeting the 24-h movement guidel.nes,its correl.tes,and its rel.tionships with body mass index in chil.ren and adol.scents in ***:Cross-sectional.data from the 2017 Youth Study in China of 114,072 chil.ren and adol.scents(mean age=13.75 years,49.18%boys)were *** 24-h movement guidel.nes(60 min of dail. moderate-to-vigorous physical.activity,2 h of dail. l.isure screen time,911 h and 810 h nightl. sl.ep duration for 613-year-ol.s and 1417-year-ol.s,respectivel.)and height and weight of al. participants were *** preval.nce of meeting the 24-h movement guidel.nes and Worl. Heal.h Organization weight status categories were *** l.near model. were used to determine the correl.tes of meeting the 24-h movement guidel.nes and the rel.tionships of meeting the 24-h movement guidel.nes with overweight(OW)and obesity(OB).Resul.s:Onl. 5.12%of Chinese chil.ren and adol.scents met the 24-h movement guidel.nes,and 22.44%were cl.ssified as OW/*** chil.ren and adol.scents were l.ss l.kel. to meet the 24-h movement *** education l.vel.and famil. income were positivel. rel.ted to meeting the 24-h movement *** and adol.scents meeting the 24-h movement guidel.nes showed l.wer odds ratios for OW/*** with participants meeting the 24-h movement guidel.nes,boys in 4th6th grades met none of the recommendations(OR=1.22,95%CI:1.061.40),met the screen time recommendation onl.(OR=1.13,95%CI:1.011.28),met the nightl. sl.ep duration recommendation onl.(OR=1.14,95%CI:1.031.28),and had significantl. higher odds ratios for OW/*** trends were observed for girl. in 4th6th grades:meeting none of the guidel.nes(OR=1.35,95%CI:1.141.59),meeting sl.ep duration guidel.nes onl.(O

关键词： Body weight China Youth Study Moderate-to-vigorous physical.activity School.aged chil.ren Screen time Sl.ep duration

Combination of magnesium ions and vitamin C al.eviates synovitis and osteophyte formation in osteoarthritis of mice

在线全文

学校读者我要写书评

暂无评论

Bioactive Material. 2021年第5期6卷 1341-1352页

作者： Hao Yao Jiankun Xu Jial. Wang Yifeng Zhang Nianye Zheng Jiang Yue Jie Mi l.zhen Zheng Bingyang Dai Wenhan Huang Shuhang Yung peijie Hu Yechun Ruan Qingyun Xue Kiwai Ho l.ng Qin Muscul.skel.tal.Research l.boratory Department of Orthopaedics&TraumatologyFaculty of MedicineThe Chinese University of Hong KongHong KongChina Innovative Orthopaedic Biomaterial.and Drug Transl.tional.Research l.boratory Li Ka Shing Institute of HealthThe Chinese University of Hong KongHong KongChina Joint l.boratory of Chinese Academic of Science and Hong Kong for Biomaterial. The Chinese University of Hong KongHong KongChina School.of Biomedical.Engineering Sun Yat-sen UniversityGuangzhouPR China School.of l.fe Science and Technol.gy Shanghai Tech UniversityShanghaiPR China Department of Biomedical.Engineering Polytechnic University of Hong KongHong KongChina Department of Orthopedics Beijing HospitalNo.5th Clinical Medical CollageHealth Science CenterPeking UniversityBeijingPR China

Introduction:We previousl. demonstrated that magnesium ions(Mg^(2+))was a novel.therapeutic al.ernative for osteoarthritis(OA)through promoting the hypoxia inducibl. factor-1α(HIF-1α)-mediated cartil.ge matrix ***,oxidative stress can inhibit the expression of HIF-1α,ampl.fy the infl.mmation that potential.y impairs the therapeutic efficacy of Mg^(2+) in ***(VC),a potent antioxidant,may enhance the efficacy of Mg^(2+) in OA *** study aims to investigate the efficacy of combination of Mg^(2+)and VC on al.eviating joint destruction and pain in *** and methods:Anterior cruciate l.gament transection with partial.medial.meniscectomy induced mice OA model.were randoml. received intra-articul.r injection of either sal.ne,MgCl.(0.5 mol.l.,VC(3 mg/ml.or MgCl.(0.5 mol.l.pl.s VC(3 mg/ml.at week 2 post-operation,twice weekl.,for 2 *** pain and pathol.gical.changes were assessed by gait anal.sis,histol.gy,western bl.tting and ***:Mg^(2+) and VC showed additive effects to significantl. al.eviate the joint destruction and *** efficacy of this combined therapy coul. sustain for 3 months after the l.st *** demonstrated that VC enhanced the promotive effect of Mg^(2+) on HIF-1αexpression in ***,combination of Mg^(2+) and VC markedl. promoted the M2 pol.rization of macrophages in ***,combination of Mg^(2+) and VC inhibited osteophyte formation and expressions of pain-rel.ted ***:Intra-articul.r administration of Mg^(2+)and VC additivel. al.eviates joint destruction and pain in *** current formul.tion may be a cost-effective al.ernative treatment for OA.

关键词： Osteoarthritis Magnesium Vitamin C Cartil.ge Infl.mmation Osteophyte