mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Synthesis and Characterizaion of a New Inorganic-organic Sulfate Compound--Crystal Structure of [Ni(H2O)6][H2N(C2H4)2NH2](SO4)2

[Ni(H2O)6][H2N(C2H4)2NH2](SO4)2 is an inorganic-organic compound with a new open framework synthesized by hydrothermal method, and characterized by means of single-crystal diffraction and spectroscopic data. The compound crystallized in a monoclinic space group P21/n with a=1.29089(2) nm, b=1.06301(3) nm, c=1.33202(4) nm, β=114.0870(10)°, V=1.67127(8) nm3, Z=4, and was solved by using the direct method and the least-squares refinement converged at R=0.0214[I>2σ(I)]. The structure consists of isolated Ni(H2O)6 octahedra and SO4 tetrahedra, with both of them hydrogen-bonded to piperazine cations.
Effect of heat input on microstructure and properties of welded joint in magnesium alloy AZ31B

Using the optical microscope, tensile test machine and micro-hardness meter, the effect of heat input on the microstructure and mechanical properties in fusion welding joints of AZ31B wrought alloys was investigated systematically, the mechanism on joint properties losing was analyzed, and a valid method to improve joint properties of the magnesium alloy fusion welding was explored. The results show that the heat input has an obvious effect on the microstructure and properties. Under the condition of penetration, with the heat input decreasing, the crystal grain in the weld and heat-affected zone (HAZ) becomes fine, the width of HAZ becomes obviously narrow, and the molding of the weld is improved, so the tensile strength and elongation are increased and the hardness of joints is improved. When the heat input reaches 60 J/mm, the high quality joints can be gained.
Superplasticity of fine-grained AZ31 Mg alloy sheets

Superplastic mechanical properties of fine-grained AZ31 Mg alloy sheets in the temperature range of 250 - 450 ℃ and strain rate range of 0.7 × 10-3- 1.4 × 10-1 s-1 were investigated by uniaxial tensile tests. The microstructure evolution during the superplastic deformation of AZ31 Mg alloy was examined by means of metallurgical microscope and transmission electronic microscope (TEM). It is shown that, fine-grained AZ31 Mg alloy starts to exhibit superplasticity at 300 ℃ and the maximum elongation of 362.5% is obtained at 400 ℃ and 0.7× 10-3 s-1.The predominate superplastic mechanism of AZ31 Mg alloy in the temperature range of 300 -400 ℃ is grain boundary sliding (GBS). Twinning caused by pile-up of dislocations during the early stage of superplastic deformation is the hardening mechanism, and dynamic continuous recrystallization (DCRX) is the important softening mechanism and grain stability mechanism during the superplastic deformation of the alloy.
New Exact Solutions to (2+1)-Dimensional Dispersive Long Wave Equations

Based upon a further extended tanh method [Phys. Lett. A307 (2003) 269; Chaos, Solitons and Fractals 17 (2003) 669] and the symbolic computation system, Maple, we consider the (2+1)-dimensional dispersive long wave equations. We obtain many new solutions of the equation. These solutions contain soliton-like solutions, periodic form solutions, and some rational solutions.
Effect of strontium on columnar growth of dendritic α phase in near-eutectic Al-11.6%Si alloys

For Al-11.6 % Si alloy, the influence of the addition of Sr on the morphology of the dendrite α phase was investigated, and the characteristic parameters of the dendrite α phase, the primary dendrite spacing and the secondary dendrite arm spacing, were also measured. The addition of strontium promotes the columnar dendrite growth and leads to a decrease of both the primary dendrite spacing and secondary dendrite arm spacing with the increase of the content of strontium in the modified near-eutectic Al-Si alloys. It is thought that the addition of Sr leads to a reduction of the solid-liquid interfacial energy of the dendrite α phase, consequently resulting in a decrease of the growth undercooling of dendrite tips. And hence, the nucleation of the equiaxed grains in the liquid in front of the columnar dendrite tips is restrained, thus the addition of strontium in Al-Si alloys promotes the growth of the columnar dendrites. The reduction of the solid-liquid interfacial energy also leads to the decreases in the primary dendrite spacing and the secondary dendrite arm spacing.
Synthesis and character of spinel LiMn_2O_4

The spinel LiMn2O4 was made from Li2CO3 and MnO2 by combining the soft chemical treatment with the solid state reaction. The heating temperature was auto-controlled by program and the two-step treatment was adopted. The synthesis mechanism of the spinel LiMn2O4 was studied by TGA-DTA analysis. It is found that the reaction of Li2CO3 and MnO2 will occur at the temperature lower than 600 ℃ and MnO2 has self-catalysis function during the reaction. The results of XRD and SEM to the synthesized materials show that the LiMn2O4 phase is pure,with regular appearance and uniform granularity distribution. The electrochemical tests indicate that the spinel LiMn2O4 has perfect cycling performances and the cycling capacity still keeps at 109. 6 mA · h/g after 5 cycles.
Twice reverse shape memory effect in CuZnAl shape memory alloy

The variations of the shape memory effects in the Cu-13Zn-15Al(mole fraction, %) alloy upon successive heating (the rate of heating is 5 ℃/min) have been studied by means of p-T curve , shape memory effect measurement, optical metallographical observation and X-ray diffraction. The first abnormal reverse shape memory effect occurs when the tested alloy is heated to the temperature below 320 ℃; when it is heated to the temperature between 320 ℃ and 450 ℃, the forward shape memory effect occurs; in the two stages, the shape of the sample remains the same as that in the furnace when it is taken out from the furnace and air-cooled; when the tested alloy is heated to the temperature above 450 ℃, the shape of the sample remains unchanged during heating, but the second reverse shape memory effect occurs after it is air-quenched.
Degradation analysis of nickel/metal hydride battery and its electrodes materials

The results indicate that during charge and discharge, the expansion of Ni(OH)2 crystal, pulverization of MH alloy particles and falling off from current collector are identified as the main causes for deterioration of Ni/MH batteries. Meanwhile, the contact resistance of inner battery increases due to the deterioration of the negative and positive electrode, and these changes lead to increasing battery body temperature and damaging its electrode and separator. The fibre's expansion and hole's diminishment of battery's separator after degradation will affect the electrochemical performance and cycle life of Ni/MH batteries.
Microstructure and properties of liquid film solution-diffusion welding interface for ZCuBe2.5 Alloy

The microstructures and properties of liquid film solution-diffusion welding interface for ZCuBe2.5 alloy have been studied using Cu-base powder. It reveals that the welding joint has high tensile strength up to 278 MPa,rational distribution of hardness and better matches with base materials in properties. Weld metal consists of the uniform and fine α-Cu equiaxed grain and intergranular Cu5.6 Sn phase. The weld is well combined with base materials. The transition solid solution combination interface with a thickness of 150 μm has been formed. In the processof stable welding, the thickness of interface appears to have an increase linearly with bonding time. In the cases of same bonding time, the thickness of interface increases with an increase of temperature gradient, which will become even more apparent with the increase of bonding time.
Effects of die angle on microstructures and mechanical properties of AZ31 magnesium alloy processed by equal channel angular pressing

AZ31 Mg alloy was prepared through equal channel angular pressing (ECAP) by Bc route in two different dies, in which the intersecting angles between channels are 90° and 120° respectively. Microstructures and tensile behaviors of the processed material at room temperature were investigated. The 90° die could provide more effective grain refinement in one pass of ECAP. But after multiple passes of deformation and when the total strain reached about 8, the alloy processed by the two dies acquired tiny homogeneous equiaxed grains with a mean size of 1 - 5μm and possessed similar mechanical properties with a large ductility of above 45% and a yield strength of 100 MPa,which are much different from the ductility of 18% and the yield strength of 200 MPa for the conventionally extruded material. The X-ray diffraction results show a great difference on peak of the basal plane (0001) between sections perpendicular and parallel to the extrusion direction for the conventionally extruded alloy but the difference lowers much for the ECAP processed alloy. The ultra-fine-grain microstructure and the texture or scattered orientation of the basal plane (0001) has the great effect on the alloy's mechanical behavior.
Mechanism of toughening and strengthening of Si3N4/SiC/ZrO2 nanocomposites

The Si3N4-based nanocomposites reinforced with micro ZrO2 and nano SiC particles were prepared by polarity dispersant and vacuum-sintering technology. The mechanical properties and microstructures were tested. The results show that appropriate amount of micro ZrO2 and nano SiC particles, not only enhance the microhardness, but also block the excessively growth of β-Si3 N4 and β-Si3N4 grains, so they finally all grow up to uniformly pole-shaped grains. This process is similar to the strengthening and toughening mechanism of grain whiskers and makes a remarkable improvement on the toughness. Compared with Si3N4 ceramic, the toughness of Si3N4/SiC/ZrO2 nanocomposites are increased from 6.2 MPa · m1/2 to 11 MPa · m1/2.
Microstructure evolution mechanism in adiabatic shear band in TA2

The micro structure evolution mechanism in adiabatic shear band in commercial pure titanium (TA2) at high strain rates(γ≈105 - 106/s) were studied. The nanosized recrystallized grains (about 50 nm in diameter) within the center of adiabatic shear band (ASB) were observed by means of transmission electronic microscope (TEM). A Rotational Dynamic Recrystallization (RDR) mechanism can explain the microstructure evolution (i. e. nanosized grains were formed within 5 - 10μs) in ASB. Kinetics calculations indicate that the recrystallized small grains are formed during the deformation and don't undergo significant growth by grain boundary migration after deformation.
WEIERSTRASS REPRESENTATION FOR SURFACES WITH PRESCRIBED NORMAL GAUSS MAP AND GAUSS CURVATURE IN H3

The author obtains a Weierstrass representation for surfaces with prescribed normal Gauss map and Gauss curvature in H3. A differential equation about the hyperbolic Gauss map is also obtained, which characterizes the relation among the hyperbolic Gauss map, the normal Gauss map and Gauss curvature. The author discusses the harmonicity of the normal Gauss map and the hyperbolic Gauss map from surface with constant Gauss curvature in H3 to S2 with certain altered conformal metric.Finally, the author considers the surface whose normal Gauss map is conformal and derives a completely nonlinear differential equation of second order which graph must satisfy.
Synthesis of titanium carbide by induction plasma reactive spray

A novel method capable of sufficient mixing of titanium powder and methane of carbon source was developed in the synthesis of titanium carbide by induction plasma reactive spray. X-ray diffraction analysis, optical microscopy, scanning electron microscopy, and microhardness test were used to characterize the spray-formed deposit.The experimental results show that both primary carburization of the titanium particles inside the plasma flame and secondary carburization of the growing deposit on high temperature substrate contribute to the forming of titanium carbide. The transitional phase of TiC1-x has the same crystal structure as TiC, but has a slightly low lattice constant. The deposit consists of fine grain structure and large grain structure. The fine grain structure, harder than large grain structure, shows grain boundary fracture.
Expression of Recombinant Chinese Bovine Enterokinase Catalytic Subunit in P.pastoris and Its Purification and Characterization

Enterokinase is a tool protease widely utilized in the cleavage of recombinant fusion proteins.cDNA encoding the catalytic subunit of Chinese bovine enterokinase (EKL) was amplified by PCR and then to get the α-MF signal-EKL-His6 encoding gene by PCR. Then the whole coding sequence was cloned into the integrative plasmid pAO815 under the control of a methanol-inducible promoter and transformed GS 115methylotrophic strain of Pichiapastoris. Secreted expression of recombinant EKL-His6 was attained by methanol induction and its molecular weight is 43 kD. Because of the existence of His6-tag, EKL-His6 was easily purified from P. pastoris fermentation supernatant by using Ni2+ affinity chromatography and the yield is 5.4 mg per liter of fermentation culture. This purified EKL-His6 demonstrates excellent cleavage activity towards fusion protein containing EK cleavage site.
HOMOGENIZATION OF SEMILINEAR PARABOLIC EQUATIONS IN PERFORATED DOMAINS

This paper is devoted to the homogenization of a semilinear parabolic equation with rapidly oscillating coefficients in a domain periodically perforated by e-periodic holes of size ε. A Neumann condition is prescribed on the boundary of the holes.The presence of the holes does not allow to prove a compactness of the solutions in L2. To overcome this difficulty, the authors introduce a suitable auxiliary linear problem to which a corrector result is applied. Then, the asymptotic behaviour of the semilinear problem as e → 0 is described, and the limit equation is given.
Fusion Protein of Interleukin 4 and Diphtherial Toxin with High Cytotoxicity to Cancer Cells

Receptor of human interleukin 4 (hIL4R) has been found to be present on many types of cancer,so it may be a good target for cancer therapy.Here,fusion toxin gene DT4H has been constructed by fusing DNA sequence encoding the first 389 amino acids of diphtherial toxin (DT),which can not bind its own receptor,to human interleukin 4 (hIL4) gene.In order to improve the affinity of fusion toxin for hIL4R,a circularly permuted form of hIL4 (cpIL4) was used.The fusion gene was expressed in Escherichia coli where the fusion toxin DT4H was highly expressed.Purified DT4H was very cytotoxic to cancer cell line U251 cells,and moderate cytotoxic to HepG2 and MCF-7 cells.SGC-7901 cells were insensitive to it.The cytotoxic action of DT4H was specific because it was blocked by excess hIL4.These results suggest that DT4H may be a useful agent in the treatment of certain malignancies.
Effect of Apolipoprotein A-I on ATP Binding Cassette Transporter A1 Degradation and Cholesterol Efflux in THP-1 Macrophage-derived Foam Cells

Cholesterol-loaded macrophage foam cells are a central componentof atherosclerotic lesions ATP binding cassette transporter A1(ABCA1),the defective molecule in Tangier disease,mediates the efflux ofphospholipid and cholesterol from cells to apolipoprotein A-I(apoA-I),reversing foam cell formation.This study investigated the effect of apoA-I on ABCA1 degradation and cholesterol efflux in THP-1 macrophagederived foam cells.After exposure of the cultured THP-1 macrophage-derived foam cells to apoA-I for different time,cholesterol efflux,ABCA1 mRNA and protein levels were determined by FJ-2107P type liquid scintillator,RT-PCR and Western blot,respectively.The mean ABCA1 fluorescence intensity on THP-1macrophage-derived foam cells was detected by flow cytometry.Results showed that apoA-I markedly increased ABCAl-mediated cholesterol efflux from THP-1 macrophage-derived foam cells.This was accompanied by an increase in the content of ABCA1.ApoA-I did not alter ABCA 1 mRNA abundance.Significantly,thiol protease inhibitors increased the level ofABCA1 protein and slowed its decay in THP-1macrophage-derived foam cells,whereas none of the proteosome-specific inhibitor lactacystin,other protease inhibitors,or the lysosomal inhibitor NH4Cl showed such effects.The apoA-I-mediated cellular cholesterol efflux was enhanced by thiol protease inhibitors.Our results suggested that thiol protease inhibitors mightprovide an alternative way to upregulate ABCA1 protein.This strategy is especially appealing since it may mimic the stabilizing effect of the natural ligands apoA-I.
DNA Vaccine of SARS-Cov S Gene Induces Antibody Response in Mice

The spike (S) protein, a main surface antigen of SARS-coronavirus (SARS-CoV), is one of the most important antigen candidates for vaccine design. In the present study, three fragments of the truncated S protein were expressed in E. Coli, and analyzed with pooled sera of convalescence phase of SARS patients.The full length S gene DNA vaccine was constructed and used to immunize BALB/c mice. The mouse serum IgG antibody against SARS-CoV was measured by ELISA with E. Coli expressed truncated S protein or SARS-CoV lysate as diagnostic antigen. The results showed that all the three fragments of S protein expressed by E. Coli was able to react with sera of SARS patients and the S gene DNA candidate vaccine could induce the production of specific IgG antibody against SARS-CoV efficiently in mice with seroconversion ratio of 75% after 3 times of immunization. These findings lay some foundations for further understanding the immunology of SARS-CoV and developing SARS vaccines.
Dissecting and Exploiting Nonribosomal Peptide Synthetases

A large number of therapeutically useful cyclic and linear peptides of bacteria or fungal origin are synthesized via a template-directed, nucleic-acid-independent nonribosomal mechanism. This process is carried out by mega-enzymes called nonribosomal peptide synthetases (NRPSs). NRPSs contain repeated coordinated groups of active sites called modules, and each module is composed of several domains with different catalytic activities. The familiarity to these domains lays base for the future genetic engineering of NRPSs to generate entirely "unnature" Products. The details about NRPSs domain structures and the exploitation of NRPSs are described in this review.
Eales病基础研究进展

众所周知，Eales病是一种较常见的眼底血管性疾病，又称为青年性复发性玻璃体出血。此病1880年由Eales首先作出病例报告后逐渐明确这是一种特发性的视网膜静脉血管炎症，但对于其病因、发病机制仍不清楚。近年来，随着检测技术的提高，对于该问题有了更近一步的认识，现就此病的基础研究方面的文献进行综述。
自发性颈动脉海绵窦瘘1例

患者女71岁因左眼上睑下垂3周伴左眼逐渐突出15天，于2003年9月15日收入院。3周前无外伤，发热，饮酒等诱因史，患者突然出现左侧头痛，数小时后自闻及同侧有吹风样耳鸣。随后又出现左眼上睑下垂、复视。1周后左眼肿胀、充血、眼球突出逐渐明显，并视物不见。曾在当地县医院先后行抗病毒或肌注青霉素，口服消炎药等治疗。
黑龙江及邻区地震史料研究与疑难地震

一般认为,黑龙江省及其周边地区属于少震、弱震地区.根据现有的地震史料和仪器记录地震数据,黑龙江省及邻区确实算不上是个多震的区域.但由于本区的历史地震和火山喷发资料的发掘和整理还有待深入,仅依据现代地震资料和少量的地震史料来确定本区的地震活动周期及地震活动水平肯定是不全面的.
改良非穿透性小梁手术治疗闭角型青光眼的初步临床观察

为了探索一种适应于治疗闭角型青光眼合并白内障的新方法，我们设计了新的手术方案，并对非穿透性小梁手术(NPTS)进行了改良，从2002年始，对19例闭角型青光眼合并白内障患者实施了手术，术后疗效满意，现报道如下。
大剂量鱼腥草治疗单疱性角膜炎初步探讨

单纯疱疹病毒性角膜炎(HSK)是严重的感染性眼病之一，目前一般采用抗病毒药物、激素和免疫调节剂，但均不能有效控制复发。我科自1980年以来，运用大剂量鱼腥草注射液冲击治疗HSK，临床复发率低。现报道如下。
"三高两低"杂交油菜油研十号的选育

高产、高含油量、高蛋白含量的双低杂交油菜对于推动油菜生产发展具有十分重要的现实意义.油研十号含油量平均达44.43%,饼粕蛋白含量达40.44%,芥酸含量为0.47%,硫苷含量为26.03μmol/g·饼;产量比油研七号平均增产6.62%,比中油821增产8.73%,比宁杂1号和宁杂3号分别增产5.35%和6.96%,最高产量可达3.5～4t/hm2.是一个具有"三高两低"高效型的杂交油菜品种,推广应用将会给农户和加工部门带来新的经济效益.
双眼人工晶体混浊1例

梁x  男  76岁  因双眼者年性白内陈于2001年4月17日，2001年4月24日分另IJ行右眼、左目匠Phaco十IOL术。术后裸眼视力：右0．1，左0．8；矫正视力：右0．25，左1．0。出院诊断：①双眼者年性白内陈；②右眼黄斑病变。术后半年出现双眼视力下降，以右眼为甚，近1年半来，双眼视躁加重，无眼红、痛；胀及其他不适。眼部情况：右眼HM／眼前30cm，左眼0．5，双眼视力不能矫正，双眼角膜透明，房水清，人工晶体光学部呈灰白色混浊。右眼白色混浊物较致密看不清光学面内部情况。眼底窥不清。左眼为光学部表面白色混浊，中央透明，眼底隐约见红色视网膜。入院诊断：双眼人工晶体混浊、右眼黄斑病变。B超检查：双眼未见视网膜脱离。电解质检查：磷、钙超过正常值。于2003年U月25日表麻下行右眼人工晶体置换术，术中分离囊膜与人工晶体之间粘连，使人工晶体脱位于前房，扩大切口至5．5mm后取出人工晶体，植入一体式PMMA人工晶体于囊袋中，切口未缝合，术后裸眼视力：右0．25。
四种独花报春属植物种子萌发特性初探

独花报春属植物主要分布于喜马拉雅东段、缅甸北部至我国云南、四川西部,分布区狭窄,种群数量少,接近濒危.通过对独花报春属四个种种子萌发特性的研究表明:独花报春种子大小存在一定差异,不同种的萌发率存在显著的差异,光照是独花报春种子萌发的必须条件.
山羊草基因组及其在小麦改良中的应用研究进展

山羊草属是小麦近缘植物中与小麦亲缘关系最为密切的属.其中蕴藏着许多抗病、抗虫、抗逆、蛋白含量高等有益基因.在小麦进化中起着重要作用,是小麦改良重要的基因资源.山羊草有益基因向小麦遗传背景的导入,主要利用小麦-山羊草双二倍体为桥梁亲本,通过杂交、回交等方式获得小麦异代换系、异附加系、异易位系;并且利用形态标记、细胞学标记、生化标记及分子标记对小麦遗传背景下的染色体组、染色体、染色体臂及片段进行鉴定.本文对这些方面的研究进展进行了综述,对山羊草可利用基因进行了展望.
人工晶状体脱位的手术治疗

我科1998～2003年手术治疗后房型人工晶状体脱位11例11眼，其中男5例，女6例，年龄23岁～74岁，平均58．4岁，9例为老年性白内障，2例为外伤性白内障，术前合并晶状体脱位者2眼、高度近视1眼，术后有明确外伤史1眼，合并玻璃体积血1眼。现报告如下。
产科护理病历的设计与管理

护理病历是护士运用护理程序为病人解决实际问题的过程与其结果的具体体现及凭证[1].护理记录反映了护理人员的文化素养、思维方法、知识范围和工作能力等,它不仅反映了护理工作的内涵,更显示了护理工作的价值.
下睑腺样囊性癌1例

任× 男 68岁 因左下睑反复糜烂、结痂久治不愈已4年。于2002年9月11日门诊以左下睑磷状上皮癌收住院。视力：右眼1．2、左眼1．O。左下睑中央处皮肤有约6×5mm大小皮肤溃疡，表面结痂呈黑褐色，溃疡面上界与睑缘灰线平行，溃疡缘与下睑正常皮肤分界清楚。结膜面正常，睑结膜不充血，角膜透明，前房及瞳孔及后段正常。
如何搞好国家级水稻新品种示范展示

我县作为贵州省四个国家级水稻新品种示范展示基地之一,在省种子站的统一领导和部署下,为了加快水稻新品种推广速度,促进农业产业结构调整,我们积极开展了水稻新品种示范展示工作,搞好水稻新品种示范展示,对于促进我省优质高产水稻新品种更新更换、优化品种结构、普及配套栽培技术,提高农民的科学种田水平,加快科技成果转化,增加农民收入等方面均起到明显作用,下面就如何搞好国家级水稻新品种示范展示,促进新品种推广谈一点体会.……
发挥注册会计师在环境审计中的作用

环境审计起源于西方发达国家的企业内部审计.但是西方国家所指的环境审计超出了我们传统观念下的审计范围,其审计范围除了包括对环保资金筹集、使用情况的财务审计、对组织业务活动符合环境法律法规情况的合规性审计、对组织环境管理责任及其工作成果的绩效审计以外,还包括由环境管理机构对所管辖范围内单位的审核稽查,环境管理体系如ISO14000系列认证机构的工作人员对被认证组织是否达到了其有关要求而进行的考核;甚至包括环境咨询服务、对场所的评价、对机器设备进行的全面环境检查乃至对有关活动实际和潜在的环境影响进行衡量的专门技术.
微小输液微粒对家兔肺动脉压影响的研究

为了探究微小输液微粒对肺动脉压的影响, 将3组经不同孔径滤器过滤的溶液,注入随机分组的家兔体内,在推注2min、10min、30min、60min分别测量肺动脉压,发现不同粒径的输液微粒都可引起急性肺动脉压升高,持续数分钟后恢复,其升高程度、持续时间与微粒数有一定关系.3～10μm微粒对肺损害不能忽视,肺动脉高压病人,静脉用药更应谨慎.应尽早应用静脉推注滤器,提高终端滤器截留效果,以减少微粒输入体内.
菜心杂交一代品种的灰色综合评判

用灰色评判法对六个菜心杂交一代品种分析的结果表明:菜心9个性状(单株重、株高、叶柄及叶长、最大叶宽、茎粗、根重、叶柄及叶重、茎薹重、叶片数)的权系数分别为:0.163、0.111、0.118、0.099、0.117、0.093、0.118、0.068、0.112;品种的灰色综合评判值大小顺序为:A5＞A1＞A2＞A4＞A3＞A6;其中A1、A5的灰色综合评判值＞0.789,为一级F1品种;A2、A4的灰色综合评判值介于0.700～0.753之间,为二级F1品种;A3、A6的灰色综合评判值＜0.636,为三级F1品种.
杂交稻不育系提纯保纯技术要点

本文从杂交稻珍汕97不育系提纯保纯的结果,概要分析了三系杂交稻不育系提纯保纯的技术要点:采用先进科学的提纯方法;严格隔离条件;稳固建立种子特约繁殖基地;主要农艺措施严格按操作规程执行;由专业队伍统一去杂;保持系割青处理;实行专用晒场和专用脱粒机具;临时仓库禁止堆放或贮藏其他水稻种子;及时入库,分仓分品种贮藏保管.
杂交稻博优3550种子真实性与纯度的快速鉴定

研究利用等电聚焦技术对博优3550及其亲本种子蛋白进行了分析,发现有一条亲本互补谱带.使用45%的2-氯乙醇提取时谱带较为清晰.应用该互补谱带,对该杂交稻种子样品进行了鉴定,与田间小区种植鉴定的结果比较差异较小.表明这一技术在杂交稻种子纯度鉴定上是可行的.
优质高产杂交糯玉米品种遵糯一号的选育

遵糯一号系我所用自选系混选1-4作母本,自选系H52作父本,于1995年组配而成的杂交糯玉米品种.该品种具有优质、高产、株型好的特点,熟期中早熟,适应性较好,先后于1998年,2000年和2003年通过遵义市、贵州省和国家三级审定.本文主要介绍了该品种的选育过程、产量表现、特征特性和栽培技术要点.
水稻种子包衣配套浸种育秧方式探索

本试验对水稻包衣种子不同的浸种育秧方式进行了研究,结果表明,水稻包衣种子旱育秧的成秧率、秧苗素质、产量明显高于水秧,且主要是通过提高单位面积有效穗来提高产量的,而直播、浸种露白、浸种催芽三种浸种方式总体上差异不显著,即水稻包衣种子既可直播,也可浸种到露白或催芽。
提高丹参中药材出苗率的研究

试验研究结果表明,(1)丹参中药材采用地膜覆盖比对照区出苗率提高50.5百分点,稻草覆盖比对照区出苗率提高29.7个百分点.(2)采用细胞分蘖素浸种根处理比对对照区出苗率提高14.2个百分点,而喷施处理只比对照提高5%.(3)施用农家肥牛粪比对照区出苗率提高5.5个百分点.在本试验中最优处理组合是A2B3C1,出苗率最高,比最处理差组合A3B1C3的出苗率高76.2个百分点.
贵州省主栽小麦品种及材料对条锈病的抗病性评价

条锈病是我省小麦区的重要病害,近年来在我省大部分地区流行危害并呈加重之势,品种抗病性丧失,是条锈病流行的主要原因之一.通过对19个参试品种及材料对条锈病的抗性监测和分析,明确了参试品种及材料的抗性类型和经济性状,提出了不同抗性品种及材料适宜种植的区域和必须注意的问题.
对贵州马铃薯种薯生产现状及问题的思考

马铃薯是我省的主要粮食作物之一,其播种面积在省内仅次于水稻、玉米居第三位,在全国仅次于内蒙居第二位.近几年来面积逐年增加,仍处于增长期.在生产上以秋(冬)种夏收为主,少数高海拔山区是春种秋收.2003年全省种植面积51.94万hm2,其中夏收面积45.7万hm2.……
保障粮食安全育种途径与创新研究

干旱、病虫害等自然灾害及生态环境日益严重,是全球密切关注的影响粮食安全的大问题.为保障我国粮食安全,提高作物抗灾能力、提出了抗病育种,抗旱育种及生物技术育种等作物育种途径及创新研究.
云南高原优势魔芋资源研究

1云南高原优势魔芋资源的基本特点　　作为魔芋主要起源地之一的云南省,自然生态条件十分适宜于魔芋的生长,魔芋资源十分丰富,在我国已知的27个种的魔芋资源中,云南高原就有13个种,居全国魔芋资源分布之首.云南高原优势魔芋资源存在如下基本特点:
高淀粉甘薯新品种"万薯34"选育研究

本文介绍了甘薯品种"万薯34"的来源及其产量和主要形态特征、经济性状的表现.结果显示:该品种萌芽性好,结薯较大,大中薯率较高,薯块烘干率、出粉率高,抗黑斑病,耐贮性好,是一个高产质优,适合加工薯类淀粉的甘薯新品种。
荞麦研究的现状与展望

本文阐述了国内外对荞麦的研究现状,包括国际荞麦研究协会及其活动简介、国际荞麦资源收集保存情况、栽培荞麦起源的祖先种、起源地及其传播情况、荞麦类型与分类、荞麦的生理特性、荞麦的育种等,并对今后荞麦的研究作了展望.
小麦加代研究进展及其在育种中的应用

文章综述了小麦加代的研究进展,重点阐述了破除种子休眠技术和根据冬性、半冬性小麦的温光特性进行春化处理、温光调控来缩短世代周期,达到一年多代的目的.简述了小麦加代的必要性、概念、意义、研究历史概况和加代材料的选择方法以及加代技术在育种中的应用.
溶剂型木器涂料产品强制认证(3C认证)相关问题解答

为了进一步规范市场,切实有效地保护广大消费者的人身健康和安全,国家认证认可监督管理委员会决定对溶剂型木器涂料产品实施强制性产品认证(3C认证).
颈动脉系统短暂性脑缺血性发作恢复后的脑循环动力学临床研究

有关颈动脉系统短暂性脑缺血性发作(transient ischemic attack, TIA)恢复后脑循环动力学指标(CVDI)变化的研究报道甚少,如脑动脉弹性、脑血管阻力、临界压力及脑血管自动调节功能等.本研究采用脑循环动力学检测仪(CVA)对40例颈动脉系统TIA恢复后的脑循环动力学指标进行检测,以探讨CVDI的变化规律及其在TIA的预防和治疗中的作用.……
脊髓损伤后移植治疗的研究进展

脊髓损伤(spinal cord injury, SCI)是人类致残率最高的疾患之一.脊髓损伤后断裂的轴突不能有效再生是导致残障的关键.有不少因素被认为导致了轴突不能有效再生,如胶质疤痕、髓鞘抑制物、生长因子支持不足和缺乏轴突再生的容许基质等.而外周神经系统(peripheral nerve system, PNS)之所以能完全再生,主要是由于神经轴突的髓鞘细胞--雪旺细胞(Schwann cells, SCs,神经膜细胞)能有效地增殖形成引导通道,并分泌大量神经营养因子(NTFs)和细胞分子,促使轴突有效再生,恢复功能.因此,在SCI区域,植入一种有能力改变CNS损伤后微环境、促进和诱导SCI轴突有效修复再生的基质,是人们一直努力的目标.近年来,对于脊髓损伤治疗的一系列动物实验取得了肯定的成果.本文就脊髓损伤后的几种主要移植物和移植方法综述如下.……