Peculiarity of magnetoresistance of discontinuous ferromagnetic thin films

The magnetoresistive properties of discontinuous ferromagnetic Fe and Co thin films deposited by electron-beam sputtering onto glass substrates at room temperature were investigated. Tunnel magnetoresistance(MR) was observed for all of the as-deposited samples. The maximum MR was observed for Fe thin films with an effective thickness of 17 nm. In the case of the Co thin films, the annealing process led to a change of the type of MR to anisotropic at Co film thicknesses(dCo) of 15 ≤ d_(Co) ≤ 25 nm and to positive isotropic at thicknesses of d_(Co) < 15 nm. By contrast, the MR type of Fe thin films did not change.

A hospital based study on causes peculiar of congestive cardiac failure(CCF)

Objective:To determine the frequency of risk factors of congestive cardiac failure in a tertiary care hospital of Peshawar.Methods:This retrospective observational study was conducted in department of Cardiology,Postgraduate Medical Institute,Lady Reading Hospital Peshawar,from March 2005 to September 2007.Relevant information regarding the risk factors of congestive cardiac failure were recorded on questionnaire prepared in accordance with the objectives of the study.Results:1 019 patients with established diagnosis of cardiac failure (based on clinical findings and relevant investigations) were included.Out of total sampling 583 (57.12%) were males and 436(42.78%) were females.The age range of the patients was from 6 years to 82 years with mean age of 48.5 years and mode of age was 45 years.The distribution of causative factors of CCF was:ischemic heart disease(IHD) 36.31%,hypertension 26.30%,dilated cardiomyopathy 10.10%,obstructve and restrictive cardiomyopathies 5.39%,valvular heart diseases(VHD) 9.32%,congenital heart disease like ventricular septal defects(VSD) 4.41%,atrial septal defects(ASD) 0.58%,atrial fibrillation (AF) 2.25%,constrictive pericardidtis 1.07%.Pericardial effusion 0.68%,chronic obstructive pulmonary disease and pulmonary hypertension 1.47%,thyrotoxicosis 0.68%,complete heart block 0.29%and paget disease in 0.09%cases.Conclusion:Ischemic heart disease,hypertension,cardiomypathies,valvular heart disease and congenital heart disease are major contributor to CCF in our patients.

HIV/AIDS selective infectivity-report of two peculiar cases

We report two peculiar cases that were observed in two communities of Anambra State,South East Nigeria.The first case was a woman of 44 with a history of blood transfusion from a donor of questionable HIV status.A pint of blood was transfused in a private Hospital on the 15th January. 2000.She has had no form of antiviral therapy until 22nd April.2008 when she came to the hospital for routine medical check up.Her HIV result came out confirmed positive while that of her husband came out negative.She has had active sexual life with her husband in the previous eight years as they have had some difficulties in getting their desired extra two children having earlier gotten a boy and a girl.The second case involves a family of six.A couple with four children of ages about 6 months,2 years,3 years and 5 years.The youngest,a female presented with fever and multiple lymphadenopathy.She tested HIV positive and so was her mother and her second sibling.But her father and two other siblings remained negative at post three and six months intervals from their very first test date with us.These reported cases appear to go contrary to earher formed opinion on HIV transmission.We support the opinion on a naturally,occurring substance,APOBEC3G which possibly confers permanent immunity against the HIV virus.We recommend clinical trials of the characterized APOBEC3G as a vaccine for non HIV infected persons of all ages and to people living with HIV/AIDS as a therapeutic drug.

PROMPT PRESSURE APPLIED TO PECULIAR POINTS IN THE TREATMENT OF SPASMODIC INFANTILE CEREBRAL PALSY -A Report of 318 Cases

Infantile cerebral palsy is a nonprogressive central motor disturbance of varied etiology.Thespasmodic type is its main form,accounting for 50—60％ of the infants afflicted with the dis-ease.The causal factors include multifarious conditions arising during parturition and in thepre-and postnatal periods.As yet there is no specific treatment for the disease.We haveused a method of applying prompt pressure to peculiar points in treating it and received sat-isfactory results.

CH_3NH_3 Formed by Electron Injection at Heterojunction Inducing Peculiar Properties of CH_3NH_3PbI_3 Material

The effect of formed CH_3NH_3 at the heterojunction on properties of CH_3NH_3PbI_3 material is investigated based on experiment and theoretical calculation. Our calculation results show that the giant dielectric constant, anomalous hysteresis and long-lasting polarization for CH_3NH_3PbI_3 originate from the formed CH_3NH_3 at the heterojunction. It is found that the induced weak EPS by the reorientation of CH_3NH_3 sub-group along the built-in electric field enables us to effectively increase the ordering of entire lead-halide framework. In addition, the heterojunction has an advantage of channel separation between carrier transport and electron diffusion. These properties of the heterojunction are the main origin of the high efficiency of CH_3NH_3PbI_3 solar cells.

Peculiar early-type galaxies with central star formation

Early-type galaxies （ETGs） are very important for understanding the formation and evolution of galaxies. Recent observations suggest that ETGs are not simply old stellar spheroids as we previously thought. Widespread recent star formation, cool gas and dust have been detected in a substantial fraction of ETGs. We make use of the radial profiles of 9 - r color and the concentration index from the Sloan Digital Sky Survey database to pick out 31 peculiar ETGs with central blue cores. By analyzing the photometric and spectroscopic data, we suggest that the blue cores are caused by star formation activities rather than the central weak active galactic nucleus. From the results of stellar population synthesis, we find that the stellar population of the blue cores is relatively young, spreading from several Myr to less than one Gyr. In 14 galaxies with H I observations, we find that the average gas fraction of these galaxies is about 0.55. The bluer galaxies show a higher gas fraction, and the total star forma- tion rate （SFR） correlates very well with the H I gas mass. The star formation history of these ETGs is affected by the environment, e.g. in the denser environment the H I gas is less and the total SFR is lower. We also discuss the origin of the central star formation of these early-type galaxies.

Asymptotic Solution to Scattering Problem on a Set of Small Particles and Application to Creating the Materials with a Peculiar Refractive Index

The asymptotic solution to the scattering problem on a set of small particles, supplemented into homogeneous material, is used for modeling the materials with the desired refractive index. The consideration concerns the case of acoustic scalar scattering and the solution to initial scattering problem is built using an asymptotic approach. The closed form solution is reduced for the scattering problem. This is significant advantage of approach because there is no need to solve the respective system of boundary integral equations. High accuracy of solving the scattering problem is achieved by choosing the optimal parameters of the domain with small particles. The approach allows obtaining an explicit formula for the refractive index of the resulting inhomogeneous material. The numerical calculations show the possibility to get the specific values of refractive index including its negative values.

Anatomical peculiarities of sensory tracts of the wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect

BACKGROUND： Translocation or transplantation of nerve stem has good effect; however, nervous function of donator is completely lost. If some nerve stem is damaged, sensory tracts are intercepted from the near nerve stem by nutrient vessels to regard as neural graft for transferring and bridging which may repair injured nerve and decrease neural functional loss of donator. OBJECTIVE： To observe anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect, and to investigate its feasibility. DESIGN：Duplicated and measured design.SETTING ： Anatomy Department of Medical College affiliated to Nanhua University.MATERIALS： A total of 14 samples of upper limbs were selected from adult unnamed corpse and volunteers.METHODS： The experiment was completed at the Clinical Application Anatomy Laboratory of Medical College affiliated to Nanhua University from September to November 2005. Samples were perfused with red emulsion through artery to observe length, fibrous bands and blood supply of median nerve and ulnar nerve at wrist. Boundary of median nerve at wrist ranged from superficial site between flexor carpi radialis and palmaris Iongus to branch of common palmar digital nerves. Ulnar nerve at wrist ranged from branch of back of the hand to site of common palmar digital nerves. Proximal boundary of the two nerves was crossed from 1/8 to 2/8 region of forearm. Samples of upper limbs from 1 case were selected to simulate operation on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve. MAIN OUTCOME MEASURES： Anatomical peculiarities on sensory tracts of wrist median nerve pedicled with nutrient vessels transferring to bridge wrist ulnar nerve defect. RESULTS： ① The length of wrist median nerves was 7.8 （7.5-8.1） cm. There were 19 to 27 nerve tracts in it and the majority belonged to sensory tracts on the ulnar side, in which non-damaged separated length was about 10.0 cm to 14.0 cm. The third, second and first tracts of cutaneous branches at digital interspace and radialis of thumb arrayed from ulnaris to radialis by turns, and numbers of bands were 6.9, 7.4 and 7.2, respectively. The bands in total were 21.6. Cutaneous branches of palm entered from lateral margin of radialis and were completely separated at wrist. Two-thirds of ulnaris at nerve stem, i.e. the third, second and first tracts of cutaneous branches at digital interspace, were separated, which had little effect on sensation in distribution of median nerve. ② Its nutrient vessels originated from radial arteries about 6.2 （6.1-6.6） cm above radial styloid process were 1.2 （1.1-1.4） mm in outer diameter. The length was 5.7 （5.1-6.1） cm.③ The length of wrist ulnar nerve were 9.4 （8.9-9.7） cm and the number of nervous tract were 14 to 19, in which sensory tracts on the anterior external side were approximately equal to motor and mixed tracts on the posterior internal side in quantity. Sensory tracts were located at radialis of palm and motor tracts were located at ulnaris of back. CONCLUSION ：① Character and position of median nerve fibre bundle are clear, and length of non-damage separation of sensory tracts is coincidence with the request of transferring to bridge. ② Summation of the third, second and first tracts of cutaneous branches at digital interspace may be satisfactory to bridge of ulnar nerve at wrist （14-19 bands）. ③ This technique has little effect on sensation in distribution of median nerve. Nutrient artery of median nerve locates constantly; journey table is superficial and is easily to find out; caliber of arterial canal is thick; blood supply is plentiful; length of pedicel is suitable for translocation. The sensery tracts of wrist median nerve pedicled with nutrient vessels can be applied as nervous grafts to join injured gap in wrist ulnar nerve.

Peculiarities of nuclear DNA multiplication during embryogenesis in rice(Oryza sativa ssp.japonica)embryo cells

The study was to determine the Feulgen-DNAcontents of the nuclei in the cells of globular,

“Peculiar留云”社会实践项目创生与发展

陶行知先生在生活教育理论中提出“社会即学校”的主张,他倡导在教育中打破封闭的教学环境对学生的束缚,引导学生走近自然、走近社会,实施学校“小课堂”到紧密联着社会“大课堂”的开放式教育。《基础教育课程改革纲要（试行）》指出,要“积极开发并利用校内外课程资源。学校应广泛利用校外的图书馆、博物馆、展览馆、科技馆、工厂、农村、部队和科研院所等各种社会资源以及丰富的自然资源”。因此,加强初中社区教育资源的开发,

Scheme for Preparation of a Peculiar Type of Tripartite Entangled State via Thermal Cavity

我们经由热洞为一个古怪分成三部分的纠缠的状态的产生建议一个简单计划。古怪分成三部分的纠缠的状态同时分享 GHZ 和 W 状态的特征。在有效 Hamiltonian 的 photon-number-dependent 部分与一块强壮的古典地的帮助被取消，这样计划对热地和洞腐烂感觉迟钝。一个人需要做的唯一的事情是调制相互作用时间仅仅一次。

Construction of Non-Equilibrium Gas Distribution Functions through Expansions in Peculiar Velocity Space

Gas distribution function plays a crucial role in the description of gas flows at the mesoscopic scale.In the presence of non-equilibrium flow,the distribution function loses its rotational symmetricity,making the mathematical derivation difficult.From both the Chapman-Enskog expansion and the Hermite polynomial expansion(Grad’s method),we observe that the non-equilibrium effect is closely related to the peculiar velocity space(C).Based on this recognition,we propose a new methodology to construct the non-equilibrium distribution function from the perspective of polynomial expansion in the peculiar velocity space of molecules.The coefficients involved in the non-equilibrium distribution function can be exactly determined by the compatibility conditions and the moment relationships.This new framework allows constructing non-equilibrium distribution functions at any order of truncation,and the ones at the third and the fourth order have been presented in this paper for illustration purposes.Numerical validations demonstrate that the new method is more accurate than the Grad’s method at the same truncation error for describing non-equilibrium effects.Two-dimensional benchmark tests are performed to shed light on the applicability of the new method to practical engineering problems.

隐秘的角落:学术欺凌及其辨识

学术欺凌是发生在高等教育机构与学术场域中的欺凌,比中小学的校园欺凌和一般职场欺凌更为复杂与隐蔽。学术欺凌涉事主体多元,存在多重欺凌关系;欺凌场所封闭,欺凌行为隐蔽;侵害与利益相伴生,申诉存在道德两难。大学的等级制结构与崇尚自治的组织文化,也在一定程度上助长并复刻了欺凌行为。这导致学术欺凌虽然发生范围广、持续时间长,但是辨识难度高,容易被忽略。澄清学术欺凌的概念、属性与类型,有助于将学术欺凌纳入组织学习,唤醒学术界防范学术欺凌的意识。

On the Identification of N-rich Metal-poor Field Stars with Future Chinese Space Station Telescope

During the long term evolution of globular clusters(GCs), some member stars are lost to the field. The recently found nitrogen-rich(N-rich) metal-poor field stars are promising candidates of these GC escapees, since N enhancement is the fingerprint of chemically enhanced populations in GCs. In this work, we discuss the possibility of identifying N-rich metal-poor field stars with the upcoming Chinese Space Station Telescope(CSST). We focus on the main survey camera with NUV, u, g, r, i, z, y filters and slitless spectrograph with a resolution about 200.The combination of UV sensitive equipment and prominent N-related molecular lines in the UV band bodes well for the identification: the color–color diagram of(u-g) versus(g-r) is capable of separating N-rich field stars from normal halo stars, if metallicity can be estimated without using the information on u-band photometry.Besides, the synthetic spectra show that a signal-to-noise ratio of 10 is sufficient to identify N-rich field stars. In the near future, a large sample of N-rich field stars found by CSST, combined with state-of-the-art N-body simulations will be crucial to deciphering GC-Galaxy co-evolution.

数智赋能专精特新企业国际化经营:进程、机制与对策

专精特新企业专注于特定领域的深度开发和创新,为全球市场提供了独特的价值,深入了解这些企业在全球市场中的运营策略,有助于提高其国际化管理能力,增强全球竞争力。文章将专精特新企业国际化经营的进程划分为初始阶段、市场拓展阶段和国际化阶段,分别描述了各个阶段企业国际化经营的特点和数智赋能在其中发挥的作用。然后,从概率、速度和节奏三个维度归纳了数智赋能对专精特新企业国际化经营的影响机制,并分别从内部和外部两个角度总结了不同维度下的影响因素。最后,文章建议通过加强数智基础设施建设、增强数智化应用和创新能力、利用国际化平台与合作伙伴网络、建立健全风险管理机制从而完善数智赋能专精特新企业国际化经营的进程。

Peculiar Velocities and Cosmic Mach Numbers

1 Introduction The observational data of peculiar velocity field of galaxies are important for testing cosmological scenarios. After the pioneer work of Rubin and Ford in 1976, severnl observational results were given by different groups, and many theoretical models were presented. Unfortunately, the theoretical results are inconsistent with observational ones. Recently, Ostriker et al. have presented the new concept (cosmic Mach number) and given calculated results. In this note, we will detail calculations of peculiar velocities and cosmic Mach numbers by using some acceptable assumptions.

锦纶与改性涤纶织物增白和抗酚黄变一浴工艺

为解决锦纶与改性涤纶混纺织物常规增白和抗酚黄变两浴法工艺中效率低、资源浪费和异味等问题,通过单因素试验,研究一浴法中温度、时间、冰醋酸和抗酚黄变剂N用量对织物的白度、抗酚黄变等级和异味的影响,并与常规两浴法工艺进行了对比。总结得出最优的一浴法工艺为:酸性荧光增白剂BA2670.3%,抗酚黄变剂N 3.0 g/L,匀染剂P 1.0 g/L,浴比1∶10,95℃处理20 min。结果表明,最优一浴法工艺应用于生产实践,可节约水、电、汽和冰醋酸等资源,处理后织物的白度和抗酚黄变等级与常规工艺相当,且无异味,满足客户对生态健康纺织品的需求。