mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Geochemistry of Trace and Rare Earth Elements in Red Soils from the Dongting Lake Area and Its Environmental Significance

Trace element (TE) and rare earth element (REE) contents in red soils from the Dongting Lake area of China were determined to understanding the provenance and weathering characteristics of the red soils. The results showed similar REE distribution patterns among red soils from the Dongting Lake area, Xiasbu ]oess from Zhenjiang, loess and Pliocene red soil from the Loess Plateau. These patterns implied a similar provenance from dust-storms, except for red soil R5 which formed by bedrock weathering and had significant light REE (LREE) enrichment and heavy REE (HREE) depletion due to longer weathering periods and higher intensity of weathering. Trace element, especially the Rb/Sr and Li/Ba ratios, and REE, especially the LREE/HREE ratio and ζEu could trace weathering intensity. Higher Rb/Sr, Li/Ba, and LREE/HREE ratios and negative Eu anomalies were present in the red soils from the Dongting Lake area. The weathering intensity was in the decreasing order of R5 in the Dongting Lake area > red soils from the Dongting Lake area (including reticulate red soil, weak reticulate red soil, and homogeneous red soil formed by dust storms) > Xiashu loess from Zhenjiang >loess-paleosol and Pliocene red soil from the Loess Plateau. Variations in the TE and REE contents of soil could be effectively used to study the provenance and the weathering intensity.
儿童变应性肉芽肿性血管炎2例报告并文献复习

目的 提高对变应性肉芽肿性血管炎(CSS)的认识和早期诊断与治疗水平,减少误诊、漏诊.方法 分析2例CSS患儿的临床资料(病史特点、实验室检查、组织病理检查及治疗情况).结果 2例CSS患儿均有外周血嗜酸粒细胞(EOS)增多,有哮喘病史、皮肤损害、肺浸润、副鼻窦炎,有消化道、心血管、肾脏等多脏器受累表现,骨髓像EOS比例增高,激素疗效佳.结论 CSS临床表现复杂多样,诊断困难,应引起临床医师的重视.当难治性哮喘伴皮疹、EOS增多时需考虑CSS的可能,必要时应做多系统、多部位活检.
外科洗手后微生物采样超标原因分析

医务人员的手是医院相关性感染病原微生物传播的主要媒介;手卫生是预防医院相关性感染发生最重要、最简单、最经济和最有效的方法.笔者对两名外科医师洗手后微生物采样超标进行原因调查分析.
红外线测距仪致双眼灼伤性黄斑裂孔一例

患者男性,25岁.于2008年10月28日路过某建筑工地时,无意中扭头看到勘测楼距的测距仪,随即感到眼前一片漆黑,数秒钟后视力部分恢复,但眼前出现墨渍样黑点,持续3 d;之后症状逐渐加重,并出现眼前致密固定暗点.
再生障碍性贫血患者血清对脐血CD34~+细胞凋亡的影响

多项研究证实,再生障碍性贫血(AA)患者骨髓造血干细胞的数量减少与其过度凋亡有关,我们在过去的研究中曾证实,AA患者血清可诱导CD34~+细胞凋亡~([1]).Akt,又称蛋白激酶B(PKB),与多种细胞活动、物质代谢调节,尤其是与抑制细胞凋亡、促进细胞生存有密切关系~([2]),而Akt磷酸化后被激活是其发挥各种生物效应的重要前提.
太极拳改善脑卒中患者平衡功能的疗效观察

目的 观察太极拳对脑卒中患者恢复期平衡功能的影响.方法 将脑卒中患者48例随机分为训练组和对照组,2组均进行常规的家庭康复训练和随访,而训练组在此基础上增加简化的太极拳训练,2组均于治疗3个月后采用Berg平衡量表(BBS)评定患者的平衡能力.结果 治疗3个月后,2组患者的BBS分值均有显著提高(P<0.01),训练组评分优于对照组(P<0.05),差异有统计学意义.结论 太极拳对脑卒中患者平衡能力的改善有促进作用.
非化疗方法治疗原发性皮肤弥漫大B细胞淋巴瘤腿型一例及七年随访

患者男,72岁,2001年初于右胴窝处出现一皮肤肿块,如鸡蛋大小,质硬,无痛痒,未经处理.数月后双下肢出现大小形态不一之暗红色结节、肿块,表面光滑无破溃,无痛痒,呈进行性增大和数量增多,腹股沟淋巴结可及,质软.
云南汉族多形性日光疹与HLA-DQB1、DPB1等位基因相关性研究

多形性日光疹(PLE)的发病机制尚不清楚,普遍认为是紫外线照射下所引起的机体对未知抗原的迟发性免疫反应.Millard等[1]利用经典的双胞胎模型研究得出PLE具有较强的遗传性.人类白细胞抗原是人类主要的遗传标志,主要参与对抗原的提呈即对抗原的处理,无论是内源性还是外源性抗原的处理都需要HLA的参与.关于PLE与HLA的研究仅限于HLA-DRB1与PLE的报道.但未发现PLE的易感基因.我们应用PCR-直接测序法(SBT)检测PLE患者HLA-DQB1、DPB1等位基因,探讨HLA-DQB1、DPB1基因在PLE发病机制中的作用.
艽龙胶囊治疗湿热型便秘疗效观察

便秘足常见病、多发病,门诊患者中湿热型便秘常见,多因宿食停滞,阻滞气血,瘀阻肠道,火热内炽,形成燥屎积结,腑气不通.临床表现为舌苔厚腻或黄燥,腹胀腹痛,口有异味或口干口苦,心烦急躁,头晕耳鸣,大便于燥或秘结.应用艽龙胶囊治疗疗效显著,现将我院门诊治疗湿热型便秘效果总结如下:
HPLC测定花蛇解痒片中盐酸小檗碱含量

花蛇解痒片是由花蛇解痒胶囊剂改而来,由漆大姑、乌梢蛇、黄柏、金银花、连翘、全蝎等中药组成.胶囊质量标准在<国家中成药标准汇编>眼科耳鼻喉科皮肤科分册已有收载,其临床疗效的研究也早有报道~([1]),但尚未见对其制剂中含量测定方面的报道.为了控制其质量,笔者采用HPLC法测定花蛇解痒片中盐酸小檗碱的含量.
广藿香挥发油包合物制备方法的比较研究

广藿香是临床上常用的芳香化湿药,其味辛,件微温;归脾、胃、肺经,具有芳香化浊,开胃止呕,发表解暑的功能.临床上主要用于湿浊中阻、脘痞呕吐、暑湿倦怠、胸闷不舒、寒湿闭暑、腹痛腹泻、鼻渊头痛等症的治疗.
协日嘎四味汤胶囊治疗湿热蕴结型痤疮67例临床疗效观察

目的:观察协日嘎四味汤胶囊治疗湿热蕴结痤疮的临床疗效.方法:116例患者随机分为两组,治疗组67例,采用协日嘎四味汤胶囊治疗,对照组49例,采用米诺环素(美满霉素)治疗,连续治疗6周.结果:治疗组有效率为85.1%,对照组有效率为65.3%,两组比较,经统计学分析X~2=7.17,P<0.05,差异有统计学意义.结论:协日嘎四味汤胶囊能有效治疗痤疮.
低敏配方在牛奶蛋白过敏患儿中的应用

近年来,食物过敏(food allergy,FA)的发病率呈持续上升趋势.据报道,每12名婴幼儿中就有1名患有食物过敏,其中牛奶蛋白过敏(cow's milk protein allergy,CMPA)最为多见.CMPA是指由牛奶蛋白引起的异常或过强的免疫反应.现有资料显示CMPA的发病率约为2%～3%,年龄多集中在2岁以下~([1]).
荧光原位杂交检测HER2的一些优点

2006年,美国临床肿瘤学会(ASCO)和美国病理学医师学院(CAP)联合发布了乳腺痛HEB2临床榆测指南(以下简称ASCO/CAP指南)[1],对HER2检测所涉及的相关问题进行了定义和规范.该指南中指出目前没有评价HER2水平的金标准,对免疫组织化学(IHC)和荧光原位杂交(FISH)两种检测方法尤意推荐哪一种更好.
慢性肾功能衰竭从脾论治

慢性肾功能衰竭(CRF)属于中医学的"水肿"、"腰痛"、"癃闭"、"淋证"等疾病范畴.本病以脾肾虚衰为本,水湿、湿热、湿浊、瘀血为标,标本互为因果,虚实相互夹杂.
中风病外治方法的古代文献研究

1中风病病名沿革"中风"现在多指"急性脑血管病".中国古代关于中风病有偏枯、风痱、大厥、仆击、薄厥等多种称谓,从文献记载来看,"中风"一词所指的疾病古今差异很大.
Micromagnetic Simulation of Transfer Curve in Giant-Magnetoresistive Head

The transfer curve of the giant-magnetoresistive(GMR)magnetic head represents its most important property in applications,and it is calculated by the micromagnetic modeling of the free layer and the pinned layer in the heart of the GMR head.Affections of the bias hard magnetic layer and the anti-ferromagnetic pinning layer are modeled by effective magnetic Selds.The simulated transfer curve agrees with experiment quite well,therefore the values of these effective magnetic fields can be determined by the model.A synthetic antiferromagnetic spin valve structure GMR head is also analyzed for comparison.
Dependence of Junction Voltage Saturation on Uniformity and Quality of Laser Diode Bars

The dependence of the sinkage at the threshold of the electric derivative curve(IdV/dI-I)on the uniformity and the quality of the laser diode bar is analyzed.By using the equations derived from the equivalent circuits of the bars,the influence of the bar uniformity on the depth of the dip is investigated in theory under certain conditions.Furthermore,the experimental results based on the presented technique indicate that the depth of the dip is interrelated to the uniformity and the quality of the corresponding bar.The present technique can be used conveniently and effectively to measure the laser diode bars in practice.
Proton Acceleration with Nano-Scale Micro-Structured Target by Circularly Polarized Laser Pulse

Two dimensional particle-in-cell simulations are taken to study the interaction of a circularly polarized laser pulse with a nano-scale micro-structured target.The protons which are doped in the rear side of the target experience the electrostatic Gelds caused by both the radiation pressure driven shock and the target normal sheath at the rear side of the target.A quasimonoenergetic proton bunch with central energy of about 11 MeV and energy spread of △_(ε/ε) about 0.18 is achieved by using a 3.45×10~(19) W/cm~2,66 fs laser pulse.A comparison with the case of linearly polarized laser pulse and the same target condition is considered.
An Efficient Photon Conversion Efficiency Ammonia Terahertz Cavity Laser

An efficient ammonia terahertz(THz)cavity laser is reported experimentally.Unlike the past design schemes such as hole couplers and freestanding mesh couplers,in our systems the input and output couplers are fabricated by depositing nickel capacitive metallic meshes on ZnSe and high-resistivity silicon substrates.Thus the couplers not only can be constructed as an F-P oscillator but also can be used as sealed windows that are easier to perform the adjustment of alignment with.To enhance THz laser output energy and photon conversion efficiency,the dominant factors such as pump intensity and gas pressure are investigated experimentally.Finally,a 1.35 mJ terahertz radiation of ammonia laser with 90μm wavelength(3.33THz)operating at 1.09kPa pumped by a 402mJ TEA CO_2 laser with 9R(16)line is generated,and photon conversion efficiencies of 6.5% are achieved.
Improved Quantum Evolutionary Computation Based on Particle Swarm Optimization and Two-Crossovers

A quantum evolutionary computation(QEC)algorithm with particle swarm optimization(PSO)and twocrossovers is proposed to overcome identified limitations.PSO is adopted to update the Q-bit automatically,and two-crossovers are applied to improve the convergence quality in the basic QEC model.This hybrid strategy can effectively employ both the ability to jump out of the local minima and the capacity of searching the global optimum.The performance of the proposed approach is compared with basic QEC on the standard unconstrained scalable benchmark problem that numerous hard combinatorial optimization problems can be formulated.The experimental results show that the proposed method outperforms the basic QEC quite significantly.
Cryptanalysis and Improvement of Quantum Secret Sharing Protocol between Multiparty and Multiparty with Single Photons and Unitary Transformations

In a recent paper[Yan F L et al.Chin.Phys.Lett.25(2008)1187],a quantum secret sharing the protocol between multiparty and multiparty with single photons and unitary transformations was presented.We analyze the security of the protocol and find that a dishonest participant can eavesdrop the key by using a special attack.Finally,we give a description of this strategy and put forward an improved version of this protocol which can stand against this kind of attack.
急性等容稀释性自身输血在心脏外科手术中的应用

目的 探讨稀释性自身输血在不同心脏外科手术患者中的应用效果.方法 选择260名择期心脏外科手术患者作为观察组.另选择238名同期、同等条件、同类手术的异体输血患者做对照组.结果  不同心脏外科手术患者采用HAT后,其术前、术中RBC、Hb、Hct、Plt的变化有统计学意义(P<0.05),与术后7 d比较无统计学意义(P>0.05),观察组与对照组比较,出血量差异无统计学意义,但术中输异体血减小,输血反应相当减小(P<0.01).2组术前、术后RBC、Hb、Hct、Pit的变化无统计学意义(P>0.05);结论对符合HAT心脏外科手术患者,HAT操作简便,无副作用,节约血液.
川芎嗪联合替米沙坦治疗早期糖尿病肾病的疗效观察

目的 观察川芎嗪联合替米沙坦治疗早期糖尿病肾病的疗效.方法 将100例早期糖尿病肾病(2型糖尿病伴微量清蛋白尿)患者随机分成A、B、c组.在一般治疗的同时,A组给予川芎嗪120 mg=/d静脉滴注+替米沙坦20～80 mg/d口服;B组给予川芎嗪120 mg/d静脉滴注;C组给予替米沙坦20～80 mg/d口服.均治疗4个月.比较3组患者治疗前后的24 h尿清蛋白排泄率(24 h UAER)、血清肌酐(SCr)、尿素氮(BUN)、尿酸(UA)、血压、总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)、空腹血糖(FBG)、餐后2 h血糖(2 hPBG)、糖化血红蛋白(HbA_(1c))、血浆黏度及纤维蛋白原水平.结果 A、B、C组患者治疗后UAER分别为(120±27)rag/24 h、(190±20)me/24 h和(176±19)mg/24 h,较治疗前[分别为(228±29)mg/24 h、(230±28)rag/24 h和(228±30)mg/24 h]显著下降,且治疗后A组患者24 h UAER较B组、C组显著下降,差异有统计学意义(P
调度工作质量控制的标准确定与实用意义

院前急救中的调度工作就是120急救电话的受理业务,无论从部门还是专业上讲都是急救医疗机构和急诊医学学科的重要组成.由于种种原因调度专业至今尚未建立全国统一的行业准入制度和质量控制体系,但调度工作却关系到急救系统的运行效率和急救对象的生死存亡.因此,建立科学规范的调度业务质量控制体系意义重大,本文就此进行了初步的探讨.
Synthesis, Crystal Structure, Theoretical Calculation and Thermal Behavior of DNAZ·NTO

DNAZ·NTO was prepared by mixing 3,3-dinitroazetidine (DNAZ) and 3-nitro-1,2,4-triazol-5-one (NTO) in ethanol solution. Single crystals suitable for X-ray measurement were obtained, which belong to monoclinic, space group P2_1/n with unit cell parameters of a=1.4970(4) nm, b=0.6325(2) nm, c=2.2347(7) nm, β=96.55(1)°,V=2.1022(11) nm~3, D_c=1.752 g·cm~(-3), F(000)=1136 and Z=8. Based on the analysis of the molecule structure,the theoretical investigation of the title compound was carried out at B3LYP/6-311 + +G~(**) levels, and the natural atomic charge and natural bond orbital analysis were performed. The interaction between the cation and anion was also discussed. The thermal behavior of DNAZ·NTO was carried out by DSC and TG/DTG techniques. The apparent activation energy (E_a) and pre-exponential constant (A) of the main exothermic decomposition reaction were obtained.
An Efficient Solvent Free Synthesis of 1,8-Dioxo-octahydroxanthene Using p-Toluene Sulfonic Acid

A simple and efficient method for the synthesis of 1,8-dioxo-octahydroxanthene by using p-toluenesulfonic acid as a catalyst under solvent free conditions is described, which involves cyclizafion of 2,2-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) that was obtained firstly by the reaction of dimedone with aromatic aldehydes in water as solvent and catalyst at room temperature. The experimental procedures in the two steps are very simple and the products are formed in excellent yields.
马鞭草HPLC-PDA指纹图谱研究

目的 研究并建立不同产地马鞭草药材的指纹图谱,为科学评价与有效控制马鞭草药材质量提供新的方法 .方法 色谱柱为Diamonsil~(TM) C_(18)柱(250 mm×4.6 mm,5μm),流动相为乙腈-0.05%磷酸水进行梯度洗脱,柱温为30℃;检测波长为265 nm,体积流量1.0 mL/min.结果 建立了不同产地马鞭草药材HPLC-PDA指纹图谱共有模式,标定20个共有峰.并对12批不同产地马鞭草药材进行了相似度比较,8批马鞭草药材的相似度均在0.9以上,4批马鞭草药材相似度在0.8～0.9.结论 本方法 操作简便、快速、准确,可作为马鞭草药材的鉴别和质量控制方法 .
热毒宁注射液对禽流感病毒的抑制作用

目的 观察热毒宁注射液对H5N1亚型禽流感病毒的抑制作用.方法 采用Klein-Defors悬浮方法 进行热毒宁注射液对H5N1亚型禽流感病毒的抑制作用试验,作用后以灭菌生理盐水对混合液进行10倍系列稀释,接种并检测感染鸡胚情况.结果 热毒宁注射液原液,1:5、1:10、1:20稀释液与10~(8.25) EID_(50) H5N1亚型禽流感病毒液作用10 min.病毒抑制率分别为99.82%、43.76%、0、0;与10~(8.25) EID_(50) H5N1亚型禽流感病毒液作用30min,病毒抑制率分别为100%、99.94%、32.39%、0.结论 热毒宁注射液原液对H5N1亚型禽流感病毒较好的抑制作用.
我国不同产地当归药材质量的分析与评价

目的 对我国当归不同产地的药材质量进行分析与综合评价.方法 采集2008年我国各主产区传统采收期的25批次当归药材样品,采用HPLC法、UV法测定当归药材中总挥发油、藁本内酯、正丁烯基酰内酯、阿魏酸、总多糖的量;运用主成分分析法对当归多指标进行综合评价.结果 岷归、云归、川归、窑归的多指标成分比较分析与综合评价,以甘肃产岷归质量为优;主成分分析中藁本内酯的因子载荷量最大,说明其对当归质量的影响较为显著.结论 基于我国不同产地当归药材质量的分析评价,建立了较为系统、客观的多成分类型多指标现代分析评价体系,为药材地道性科学内涵的揭示提供了依据和方法 学参考.
结肠炎症性肌纤维母细胞瘤一例

患儿:女,7岁.因消瘦3个月,便血~([1])个月余,排便时肛门脱出肿物2周入院.检查:发育正常,营养略差,贫血貌;腹部稍膨隆,左下腹有压痛,无反跳痛,听诊肠鸣音活跃;肛诊:食指进入顺利,指尖可触及一质硬肿物,大小、轮廓均不清楚,退出手指,见指套被黄色大便污染,未见血迹;结肠镜检查(图~([1])、2):进镜至降结肠,见距肛门~([1])8cm处可见一巨大肿物,分叶,表面轻度糜烂,色绿,蒂粗,根部不能明视.临床诊断:结肠肿物.
Superior mesenteric artery syndrome in a diabetic patient with acute weight loss

Superior mesenteric artery (SMA) syndrome is an uncommon disease resulting compression of the third portion of the duodenum from the superior mesenteric artery. This disease shares many common manifestations with diabetic gastroparesis, including postprandial fullness, nausea, vomiting, and bloating. Therefore, it is often overlooked in diabetic patients. Here, we report a 41-year-old man with poorly controlled diabetic mellitus who developed SMA syndrome due to rapid weight loss. The diagnosis was confirmed by computed tomography and an upper gastrointestinal series. His condition improved after parenteral nutrient, strict sugar control, and gradual weight gain.
Clinicopathological and prognostic analysis of 429 patients with intrahepatic cholangiocarcinoma

AIM: To understand the clinicopathological characteristics and treatment selections and improve survival and provide valuable information for patients with intrahepatic cholangiocarcinoma (ICC). METHODS: We retrospectively evaluated 5311 liver cancer patients who received resection between October 1999 and December 2003. Of these, 429 (8.1%) patients were diagnosed with ICC, and their clinicopathological, surgical, and survival characteristics were analyzed. RESULTS: Upper abdominal discomfort or pain (65.0%), no symptoms (12.1%), and hypodynamia (8.2%) were the major causes for medical attention. Laboratory tests showed 198 (46.4%) patients were HBsAg positive, 90 (21.3%) had α-fetoprotein > 20 μg/L, 50 (11.9%) carcinoembryonic antigen > 10 μg/L, and 242 (57.5%) carbohydrate antigen 19-9 (CA19-9) > 37 U/mL. Survival data was available for 329 (76.7%) patients and their mean survival time was 12.4 mo. The overall survival of the patients with R0, R1 resection and punching exploration were 18.3, 6.6 and 5.6 mo, respectively. Additionally, CA19-9 > 37 U/mL was associated with lymph node metastases, but inversely associated with cirrhosis. Multivariate analysis indicated that radical resection, lymph node metastases, macroscopic tumor thrombi and size, and CA19-9 were associated with prognosis.CONCLUSION: Surgical radical resection is still the most effective means to cure ICC. Certain laboratory tests (such as CA19-9) can effectively predict the survival of the patients with ICC.
Geometry of Rectangular Block Triangular Matrices

Let D be any division ring, and let T(mi,ni,k) be the set of k × k (k≥2) rectangular block triangular matrices over D. For A, B ∈T_((mi,ni,k)), if rank(A-B)= 1, then A and B are said to be adjacent and denoted by A ～ B. A map ψ : T_((mi,ni,k)) →T(mi,ni,k) is said to be an adjacency preserving map in both directions if A ～ B if and only if ψ(A)～ψ(B). Let G be the transformation group of all adjacency preserving bijections in both directions on T(mi,ni,k). When m_1, n_k ≥ 2, we characterize the algebraic structure of G, and obtain the fundamental theorem of rectangular block triangular matrices over D.
北方冬麦区干旱缓解长江中下游持续阴雨——2009年2月——

2009年2月我国主要气候特点:气温显著偏高,降水偏少.全国平均气温为0℃,较常年同期偏高2.8℃,为1951年以来历史同期第三高;福建、广东、广西、海南、四川、重庆、贵州、云南2月区域平均气温为1951年以来历史同期最高值;浙江、江西、陕西、甘肃、青海、宁夏为次高值.
湖南现代烟草农业建设实证分析

为贯彻落实中央建设社会主义新农村精神,发展现代农业,湖南省烟草局制定<湖南省现代烟草农业建设实施方案>,在郴州,衡阳,浏阳,常德,湘西进行了示范试验.结合各示范点的基本情况,综合分析了2008年湖南现代烟草农业取得的一些成就及存在的部分问题,总结了在现代烟草农业建设示范中所获得的经验和体会.
Monte Carlo simulation to key parameters of a compensated neutron logger

A compensated neutron logger (CNL) is designed by using Monte-Carlo simulation for lead shield thickness, near-to-far detector spacing range, source-to-detector spacing range, and detector's effective length. The calculated results indicate that the optimum conditions for CNL are 80-mm thick lead plus 1-cm thick LiOH shield in front of the near detector, 250 mm for the near-to-far detector distance (△r), and the source-to-detector distance (r) of 90mm. Simultaneously, some conclusion also obtained here, near/far detector counting response ratio (R) increases with the effective length of detector, R increases with the porosity for oil and water sandstones, and the oil sandstone is a bit greater than water sandstone.
The least squares problem of the matrix equation A_1X_1B_1~T+A_2_X2B_2~T=T

The matrix least squares (LS) problem minx ‖AXB~T-T‖_F is trivial and its solution can be simply formulated in terms of the generalized inverse of A and B. Its generalized problem min_(x_1,x_2)‖A_1X_1B_1~T+A_2X_2B_2~T-T‖_F can also be regarded as the constrained LS problem min_x=diag(x_1,x_2) ‖AXB~T-T‖F with A=[A_1, A_2] and B=[B_1, B_2]. The authors transform T to (T) such that min_(x_1,x_2)‖A_1X_1B_1~T+A_2X_2B_2~T-T‖F is equivalent to min_x=diag(x_1,x_2)‖AXB~T-(T)‖_F whose solutions are included in the solution set of unconstrained problem minx ‖AXB~T-(T)‖_F. So the general solutions of min_(x_1,x_2)‖A_1X_1B_1~T+A_2X_2B_2~T-T‖_F are reconstructed by selecting the parameter matrix in that of minx ‖AXB~T-(T)‖_F.
罗氏沼虾变应原的热稳定性研究

目的 分析罗氏沼虾(Macrobrachium rosenbergii)变应原和抗原的热稳定性.方法 将罗氏沼虾变应原提取液在沸水中处理后,利用SDS-PAGE电泳技术和Westem blotting技术分析处理前后提取液中抗原组分和变应原组分的变化.结果 罗氏沼虾变应原提取液经SDS-PAGE电泳检测到11条可辨蛋白带,其分子量在35～105 kD之间.沸水处理以后,可辨蛋白带只有3条,其中44 kD的蛋白带为新出现的条带.罗氏沼虾变应原提取液经westem blotting检测到3条分子量均大于80 kD的致敏条带,而沸水处理后的提取液米检测到致敏带.结论 罗氏沼虾变应原提取液经沸水处理以后,溶液中的变应原成分和其他蛋白成分发生明显变化.
2009年度地球物理与空间物理学科项目评审与资助成果

1 2009年度项目受理和统计分析1.1项目受理情况2009年度地球物理与空间物理学科申请项目总计694项.其中面上项目404项,青年科学基金项目198项,地区基金4项,国家杰出青年基金项目23项,"华北克拉通破坏"重大研究计划项目36项,"汶川大地震孕育、发生的动力学及致灾机理研究"领域重大项目6项,科学仪器专项基金项目3项,海外或港、澳合作学者基金项目2项,创新研究群体科学基金1项,"日地空间环境与空间天气"领域重点项目17项.
2009年度地质学科项目受理与资助分析

2009年度地质学科共受理各类项目1436项.其中面上项目826项,青年科学基金项目354项,地区科学基金项目25项,重点项目85项,国家杰出青年基金54项,海外青年学者合作基金2项,创新研究群体3项,重大研究计划项目22项,重大国际合作项目3项.
带线环行器、隔离器生产技术

(续上期)4.2 旋磁铁氧体片众所周知,所有类型的环行器、隔离器都离不开旋磁铁氧体片,在环行器的设计中,旋磁铁氧体材料的选择是最重要的一个方面.旋磁铁氧体材料选择不正确,会导致器件达不到设计指标.另外,如果要更换材料,无疑会带来生产周期的延迟.
更好地发挥农村互联网的作用,增加农民收入——以河北省廊坊市农村互联网的发展和使用情况为例

互联网的发展对农村经济社会的发展和农民思想观念更新起到很大的促进作用.对农村互联网发展进行抽样调查,以探求农村互联网发展与使用状况和农民利用互联网增加收入的情况,分析制约农村互联网发展的因素,提出解决的方法与建议,以期促进农村互联网的发展,提高农民收入和生活质量.
逻辑函数计算机辅助化简的研究与应用

代数法和卡诺图法是经典的逻辑函数化简方法,但它们难以化简规模大的逻辑函数.基于此,本文提出一种适用于计算机分析和处理的遍历消元化简方法,它通过遍历逻辑表达式的所有变量和与项,查找并删除表达式的全部冗余变量和与项的方法进行化简.在VB平台下编程实现,测试表明,该方法容易编程实现,运行速度快,适合于规模大的逻辑函数化简,并支持带约束项的逻辑函数化简.遍历消元化简方法为规模大的逻辑函数化简提供新方法,在工程上有应用价值.
基于PROFIBUS-DP总线的智能电控阀门控制器

简要介绍PROFIBUS-DP现场总线和工业电动阀门智能控制器.为了实现远程化控制,把PROFIBUS--DP智能从站引入到电动控制系统当中.讨论了系统的硬件和软件方案,证明了实现的可行性.
无保护左主干开口病变支架置入术11例临床分析

目的:探讨冠状动脉左主干开口病变支架置入术的安全性及疗效.方法:分析11例左主干开口病变患者行支架置入术的成功率及随访结果.结果:11例患者支架置入术即刻成功率为100%,无残余狭窄或残余狭窄率<10%,无严重术中并发症.随访6～12个月,无亚急性或延迟性支架内血栓形成;临床心绞痛复发1例;6例行冠状动脉造影复查,未发现支架内再狭窄.结论:支架置入术治疗左主干开口病变疗效明显,并发症及再狭窄率低,是一种安全有效的治疗方法.
Flow Field Characteristics of the Rotor Cage in Turbo Air Classifiers

The turbo air classifier is widely used powder classification equipment in a variety of fields. The flow field characteristics of the turbo air classifier are important basis for the improvement of the turbo air classifier's structural design. The flow field characteristics of the rotor cage in turbo air classifiers were investigated under different operating conditions by laser Doppler velocimeter(LDV), and a measure diminishing the axial velocity is proposed. The investigation results show that the tangential velocity of the air flow inside the rotor cage is different from the rotary speed of the rotor cage on the same measurement point due to the influences of both the negative pressure at the exit and the rotation of the rotor cage. The tangential velocity of the air flow likewise decreases as the radius decreases in the case of the rotor cage's low rotary speed. In contrast, the tangential velocity of the air flow increases as the radius decreases in the case of the rotor cage's high rotary speed. Meanwhile, the vortex inside the rotor cage is found to occur near the pressure side of the blade when the rotor cage's rotary speed is less than the tangential velocity of air flow. On the contrary, the vortex is found to occur near the blade suction side once the rotor cage's rotary speed is higher than the tangential velocity of air flow. Inside the rotor cage, the axial velocity could not be disregarded and is largely determined by the distances between the measurement point and the exit.
Novel Analytical Model of Mean Temperature and Experimental Research on the Rail Universal Rolling

For building the analytical model of mean temperature in rail universal rolling, the cross-section ofworkpieces and the profile of horizontal roll and vertical roll are simplified rationally. The mean temperature of the web of rail, the top of rail and the base of rail are considered individually. The temperature rises for plastic deformation and friction incorresponding deformation zone, the temperature drop for contact is calculated on the base of variation principle and energy conservation law. Then the mean temperature is obtained. For verifying the theoretical model, the 18 kg/m light rail universal rolling experiments are accomplished in Yanshan University Roiling Laboratory, China and the surface temperature is measured. The surface temperature is not exact enough to express the true temperature and the mean temperature can show the status of the true temperature basically. So the mean temperature can be used to express the true temperature and this theoretical model and its results can be applied as an important reference to control the temperature of rail universal rolling and the beat treatment of the rolled rail.
30例屈光参差性弱视患儿的综合治疗疗效观察

弱视是较为常见的儿童眼病,仅发生在视觉尚未发育成熟的幼儿期.屈光参差是影响双眼单视,导致儿童弱视的常见原因之一.为了观察综合治疗法对屈光参差性弱视的治疗效果,现对我院收治的30例(52眼)屈光参差性弱视患儿的临床资料分析如下.
子宫颈上皮内瘤变135例临床分析

目的 对阴道镜下定位活检、宫颈环形电切术(LEEP)在子宫颈上皮内瘤变((CIN)诊治中的应用价值进行探讨,提出有效检出宫颈癌前病变的措施.方法 对经阴道镜活检病理诊断为CINⅡ级、CINⅢ级以及不排除宫颈癌的135例患者的临床资料进行回顾性分析,总结发病年龄、临床表现等特点,并将阴道镜活检病理和LEEP手术病理结果进行比较.结果 患者宫颈CIN的发病高峰年龄段为31～35(39/135,28.9%)岁,无症状要求检查的有65例(48.1%),132例LEEP病理与阴道镜活检病理比较,诊断相符83例(62.9%),不相符49例(37.1%).结论 要重视对年轻高危人群的筛查,对不满意的阴道镜检查即宫颈移行带不能完全暴露或病灶较大的患者,可通过增加活检数量、应用LEEP锥切术等办法提高宫颈病变诊断的准确性.
微生物抗菌肽的电喷雾串联质谱分子结构解析

目的:以微生物抗菌肽为研究对象,利用电喷雾串联质谱对其分子结构进行解析.方法:首先通过全扫描模式,得到主要成分的相对分子质量为1 436.76.然后选择主要成分m/z718.38(双电荷离子)进行串联质谱测定.结果:相对分子质量为1 436.76的化合物结构为β-OH-FA-TEAPQYIYNE(该肽的脂肪链为羟基14碳脂肪酸),属于Fengycin家族(families).结论:本研究结果表明,电喷雾串联质谱适用于分析微生物抗菌肽类具有相似结构的同系物,是测定此类化合物相对分子质量及鉴定其结构的有效工具.
AFM观察胆碱类底物对AChE四聚体亚分子结构的影响

目的:为探索乙酰胆碱酯酶(AChE)活性中心狭隙与其水解底物高效性相适应的可能机制,研究胆碱类底物对AChE四聚体(AChE G4)亚分子结构的影响.方法:冰浴超声法制备磷脂膜,囊泡融合技术将AChE重组到以云母为支撑的磷脂膜上,原子力显微技术(AFM)观察AChE分别与乙酰胆碱(ACh)和丁酰胆碱(BCh)作用前后的亚分子结构.结果:单个AChE G4颗粒是表面光滑、中间突出的椭圆形结构,亚基排列紧密,平均大小为[(89±7)nm×(68±9)nm×(6±3)nm,长×宽×高,n=100].与底物反应后,可清楚地看到亚基排列松散,酶蛋白是由4个亚基组成,亚基之间形成一个无阻碍空间,这与X线晶体学和分子动力学研究结果相一致.与S-ACh反应后,单个AChE G4颗粒平均大小为[(104±7)nm×(91±5)nm×(8±2)nm,长×宽×高,n=100],无阻碍空间大小为[(60±5)nm×(51±9)nm,长×宽,n=30];与S-BCh反应后,酶的大小为[(100±5)nm×(87±6)nm×(7±3)nm,长×宽×高,n=100],无阻碍空间大小为[(38±4)nm×(35±2)nm,长×宽,n=30].结论:胆碱类底物对AChE G4亚分子结构具有明显影响,酶亚分子结构变化与其水解底物的高效性是一致的.
上海世博会法国国家馆给排水设计总结

2010年上海世博会法国国家馆是由法国参展局建设的临时性展览场馆.介绍了在设计过程中遇到的室外污水、雨水检查井需要布置在地面结构基础范围内,燃气、电等市政配套容量受到客观条件限制等问题及解决方法;总结了与外方建筑师合作为国外建设方提供设计服务的个人感受.
杭州市第一批村级小泵站的运行管理

杭州市水业集团有限公司于2007年完成了对留下街道村级小泵站的接收和改造.村级小泵站具有点多面广、地点偏远等特点,介绍了其运行管理经验和存在的问题,并就其工艺设备、备品备件、自控功能、安全规程和业务培训等方面提出了改进的建议.
泥鳅和大鳞副泥鳅个体发育早期同工酶谱的变化

泥鳅(Misgurnus anguillicaudatus)和大鳞副泥鳅(Paramisgumus dabryanus)同属鲤形目鳅科花鳅亚科,是中国常见的经济鱼类,它们养殖简单,一年四季均可进行人工催产繁殖,是进行鱼类发育生物学研究的好材料.
麦芽提取物对小麦幼胚成苗培养及淀粉酶活性的影响

小麦是世界上重要的粮食作物之一.由于传统育种技术存在育种周期偏长,具有突破性的新品种育成速度仍不够理想,因此探索将育种周期缩短、加速小麦新种质的培育研究便显得十分必要和迫切[1].加快作物育种的速度,首先必须加快相应作物的发育速度.借助幼胚离体培养技术可以省去种子发育时间,缩短育种时间[2].
广布野豌豆耐盐性研究

研究了盐胁迫对广布野豌豆种子萌发力与愈伤组织形成的影响.结果表明:广布野豌豆种子的萌发能够适应低于0.6%NaCl浓度的盐胁迫,而更高浓度的NaCl对广布野豌豆种子的萌发不利.广布野豌豆种子萌发的耐盐半致死浓度及耐盐极限浓度分别为1.0%和1.75%.将广布野豌豆下胚轴接种在Ms培养基上培养发现,2,4-D浓度是影响下胚轴愈伤组织形成的主要因素,而NaCl浓度是影响愈伤组织形态结构的主要因素.在0.3%Nacl、1.5 mg/L 2,4-D、0 mg/L 6-BA、0.1%Ca(NO_3) _2条件下,广布野豌豆下胚轴的出愈率高,愈伤组织的形态也较好.高浓度NaCl对广布野豌豆愈伤组织的形成有不利影响,一定浓度的Ca(NO_3) _2可缓解高浓度NaCl对广布野豌豆外植体的毒害作用,提高出愈率.
控温和添加垃圾液对水葫芦发酵效果影响的研究

利用自制200 L厌氧发酵罐,分别在35℃和53℃恒温条件下,在剪切处理的水葫芦中添加不同比例的垃圾液进行厌氧发酵,观察对其发酵产气的影响及其发酵原料的全碳降解率.结果在相同控温条件下,添加40%和30%垃圾液处理的产气量及产气率分别是不添加垃圾液处理的产气量及产气率的1.32倍、1.19倍和1.87倍、1.48倍;相同进料量条件下,高温(53℃)发酵有利于发酵原料全碳的降解,发酵30 d后全碳降解率即可达到31.52%.水葫芦汁、渣分离的发酵总产气量比剪切处理提高46.10%,恒温35℃发酵15 d,水葫芦汁发酵沼液的COD降解率为75.73%,水葫芦渣发酵沼渣的全碳降解率为15.86%.