Properties of Sensitive Materials Mainly Composed of ZnO

Sensitive materials mainly composed of ZnO and their multi-functional properties were investigated. The temperature extent of linear resistance, non-linear deviation and endurance ability of surge energy were further discussed. The effect of Mg^2+, AI^3+ and Si^4+, which could be solid solutioned in ZnO grain and the function of Y^3+ ion segregated out in grain boundary were studied as well. The function of Ti was analyzed emphatically.

Clinical Observarion on 50 Cases of Long－Standing Infantile Diarrhea Treated Mainly with Massotherapy

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mainly及其它

largely,greatly,mostly,chiefly,mainly,principally和generally这7个副词都表示有关事物中最为主要、最为重要、起决定作用、占主导地位或在数量上占多数等意思,但它们之间也是有区别的: 1.largely强调数量或广度,常表示很丰富,量很大,所占比例很高而超过了其它的成分,有主要地、大半地、大部分等意思。例如:

Clinical Observation on the Efficacy Enhancing and Toxicity Attenuating Effect of Nuzhen Yangyin Granule to the Anti-Parkinsonism Therapy Mainly with Medopa

Objective: To observe and assess the efficacy enhancing and toxicity attenuating effect of Nuzhen Yangyin Granule (NYG) to the anti-parkinsonism (paralysis agitans) therapy with medopa and ar-tane. Methods: Adopting the randomized double-blinded method, the effect of adding NYG to 30 patients with Parkinsonism in the treated group,

On electro-acoustic characteristics of a marine broadband sparker for seismic exploration

The construction of major marine infrastructure projects and the exploration and development of deep-sea mineral resources require fine imaging of seabed strata and structures.The highresolution marine seismic exploration based on a high broadband sparker source is an important approach to reveal seabed stratum and reservoir structure,and identify geohazard.To optimize the performance of sparker seismic source,we investigated the electro-acoustic characteristics of spark discharge under conditions of different charging voltages and electrode numbers.Results show that the sound source level increased with the increase of the charging voltage,whereas the main frequency decreased when the charging voltage increases.In addition,it was found that the charging capacitance had more obvious influence on the main frequency than the sound source level did.Although the load energy decreased with increasing electrode number,the sound source level still increased but the main frequency decreased.Meanwhile,the primary to bubble(P/B)ratio increased with the increase of the electrode number.To gain a deeper insight into the electro-acoustic characteristics,we investigate the relationship between sound source level and power peak,from which a good correlation was observed.A more practical statistical analysis on the rise rate of current was processed,and a perfect logarithmic function was derived.Furthermore,we found that the main frequency was most possibly subjected to the electrical energy,especially the charging energy per electrode.The results indicate that the charging energy per electrode less than 10 J could increase the main frequency to above 300 Hz.At last,the main frequency could be reduced to 20 Hz when the charging energy of a single-electrode discharge was enhanced to over 4 kJ.This study shall be helpful in developing a sparker seismic source and improving the performance for marine engineering exploration and geohazard assessment.

The Path to Healthy Development for Chinese Art in the New Era

This topic is closely centered on exploring how Chinese fine arts can take the road to the healthy development of art,which is of great guiding significance.It is clear that the road of national art development is to carry forward the main theme,promote social justice,guide and infect people with correct public opinion,and better serve the people with excellent works.

Observation on the clinical efficacy of spasmodic torticollis treated with matrix needling technique and acupuncture at “Wuxin points” mainly

Objective To compare the difference in the efficacy on spasmodic torticollis between matrix needling technique combined with puncturing"Wuxin points"and the local injection of botox type A.Methods Forty-two cases were randomized into an acupuncture group and a

智能媒介与视障者社会融合的实证分析

受身体功能障碍和社会无障碍环境的双重限制,在传统社会中曾区隔于主流社会之外的视障人群,能否借助人工智能和新媒体技术等媒介参与现代社会之中?基于对这一问题的思考,研究借助“使用与满足理论”的MAIN模型,对视障人群进行了问卷调查,检测了“形式”“主体”“互动”和“导航”四类需求维度下15个类目的满足指标与视障者在社会参与和社会关系层面的因果关系。其中,社会参与指视障者在现实社会环境中参与日常活动的情况,社交关系则是视障者在社会中能获得的支持、认同与尊重程度。回归数据显示,视障者对智能媒介工具类属性的使用对于他们的社会融合会产生正面影响,且对社会参与的影响大于其对社交关系的影响。然而,若综合考虑视障者的个人社会经济背景因素、对人工智能技术的依赖程度,智能媒介的使用与满足对个人社会经济背景相对不占优势的视障者影响更大,且受访者在社交关系上的影响大于其在社会参与层面的影响。这一研究结果表明智能媒介对视障人群是一把“双刃剑”。不同类型的技术可供性所激活的使用与满足体验对不同社会经济背景的视障者会产生不同程度的影响,且这种影响是因“需”而异的。智能媒介使用与满足下的一些工具性需求指标,如“形式”维度上的需求为用户提供了走进真实社会场景的沟通工具,成为视障者的“眼睛”。但是智能媒介在引领视障者“看见”新世界的同时,也为他们提供了进一步“逃离”主流社会的“避风港”。数据显示:对于社会经济背景相对不占优势的视障者,他们更倾向于利用智能媒介获得社交关系层面的支持与链接,参与到现实世界之中。这种数字化的包容并不是现实意义上的社会融合,若不能进一步突破他们的现实困境,技术赋能反而可能增加他们与主流社会进一步隔离与分化的风险。这个发现给新媒体技术究竟是为弱势群体增权赋能还是“技术乌托邦”的争论提供了实证案例,这或许是媒介与残障研究领域内的一次有意义的尝试。此外,这也是MAIN模式在不同群体中对不同媒介使用效应的实证检验。MAIN模式主要关注特定媒介的可供性在不同群体中能带来何种感知和影响,是传统使用与满足理论的现代转向。依据智能媒介和视障者的特点对MAIN模式下的测量指标进行调试,验证该模式下的工具性需求和非工具性需求对视障者社会融合的影响。这是对MAIN模式的思考与验证,也是对不同类型的技术可供性所激活的启发是如何导致不同用户群体对媒介功能的使用体验产生不同感和影响而进行的实证探讨。

城市居民智能手机使用与在线社会支持的关系考察

在线社会支持是人们应对线下社会交往中断、提升危机抵御能力的重要资源。考察居家隔离情境下智能手机与在线社会支持的关系,有助于重新定位智能媒介在媒介化加深与不确定性陡增的双重社会语境中的角色。借助将技术互动纳入考量的使用与满足理论“MAIN”模型,发现智能手机使用能为用户带来型式、主体、互动与导航四个维度的需求满足,但与在线社会支持呈现正、负效应并存的关系,而较高的城市认同水平与社区融入程度有助于提升在线社会支持。在对双重社会语境下的“连接悖论”进行反思的基础上,提出以关系性、动态性的视角理解“在线”与“连接”的关系,而非寻求标准化的在线社会支持提升模式。

Mechanism of gas pressure action during the initial failure of coal containing gas and its application for an outburst inoculation

Faced with the continuous occurrence of coal and gas outburst(hereinafter referred to as“outburst”)disasters,as a main controlling factor in the evolution process of an outburst,for gas pressure,it is still unclear about the phased characteristics of the coupling process with in situ stress,which induce coal damage and instability.Therefore,in the work based on the mining stress paths induced by typical outburst accidents,the gradual and sudden change of three-dimensional stress is taken as the background for the mechanical reconstruction of the disaster process.Then the true triaxial physical experiments are conducted on the damage and instability of coal containing gas under multiple stress paths.Finally,the response characterization between coal damage and gas pressure has been clarified,revealing the mechanism of action of gas pressure during the initial failure of coals.And the main controlling mechanism during the outburst process is elucidated in the coupling process of in situ stress with gas pressure.The results show that during the process of stress loading and unloading,the original gas pressure enters the processes of strengthening and weakening the action ability successively.And the strengthening effect continues to the period of large-scale destruction of coals.The mechanical process of gas pressure during the initial failure of coals can be divided into three stages:the enhancement of strengthening action ability,the decrease of strengthening action ability,and the weakening action ability.The entire process is implemented by changing the dominant action of in situ stress into the dominant action of gas pressure.The failure strength of coals is not only affected by its original mechanical strength,but also by the stress loading and unloading paths,showing a particularly significant effect.Three stages can be divided during outburst inoculation process.That is,firstly,the coals suffer from initial damage through the dominant action of in situ stress with synergy of gas pressure;secondly,the coals with spallation of structural division are generated through the dominant action of gas pressure with synergy of in situ stress,accompanied by further fragmentation;and finally,the fractured coals suffer from fragmentation and pulverization with the gas pressure action.Accordingly,the final broken coals are ejected out with the gas action,initiating an outburst.The research results can provide a new perspective for deepening the understanding of coal and gas outburst mechanism,laying a theoretical foundation for the innovation of outburst prevention and control technologies.

New algorithm of shape-finding of suspension bridge with spatial cables

A new algorithm is proposed to solve the problems of shape-finding of suspension bridge with spatial cables what include tedious iteration,slow convergence speed and even no convergent under some circumstances.In this paper,the stress analysis of the main cable is carried out,and the relationship between the slope change and the coordinate change is found.This paper also discussed how to find the minimum slope point of symmetrical or asymmetric main cable,and the deformation compatibility equation is established and solved to obtain the shape of main cable.The algorithm in this paper can ensure the convergence of the solution for the suspension bridge with spatial cables.The calculation accuracy is high through the demonstration of the calculation examples.

Study of the geomagnetic field's regional gradients in Chinese continent using three-dimensional surface Spline model

We combined domestic ground-based and satellite magnetic measurements to create a regional three-dimensional surface Spline(3DSS)gradient model of the main geomagnetic field over the Chinese continent.To improve the precision of the model,we considered the data gap between the ground and satellite data.We compared and analyzed the results of the Taylor polynomial,surface Spline,and CHAOS-6(the CHAMP,?rsted and SAC-C model of Earth’s magnetic field)gradient models.Results showed that the gradients in the south-north and east-west directions of the four models were consistent.The 3DSS model was able to express not only gradients at different altitudes,but also average gradients inside the research area.The two Spline models were able to capture more information on gradient anomalies than were the fitted models.Strong local anomalies were observed in northern Xinjiang,Beijing,and the junction area between Jiangsu and Zhejiang,and the total intensity F decreased whereas the altitude increased.The gradient decreased by 21.69%in the south-north direction and increased by 11.78%in the east-west direction.In addition,the altitude gradient turned from negative to positive while the altitude increased.The Spline model and the two fitted models differed mainly in the field sources they expressed and the modeling theory.

A comparative study of the main factors controlling geohazards induced by 10 strong earthquakes in Western China since the Wenchuan earthquake in 2008

Determining the main controlling factors of earthquake-triggered geohazards is a prerequisite for studying earthquake geohazards and post-disaster emergency response.By studying these factors,the geomorphic and geological factors controlling the nature,condition,and distribution of earthquake-induced geohazards can be analyzed.Such insights facilitate earthquake disaster prediction and emergency response planning.The authors combined field investigations and spatial data analysis to examine geohazards induced by seismic events,examining ten earthquakes including the Wenchuan,Yushu,Lushan events,to elucidate the main control factors of seismic geohazard.The authors observed that seismic geohazard occurrence is usually affected by many factors,among which active nature of the seismogenic fault,seismic peak ground acceleration(PGA),topographic slope and geomorphic height differences,and distance from the fault zone and river system are the most important.Compared with strike-slip earthquakes,thrust earthquakes induce more high-altitude and high-speed remote landslides,which can cause great harm.Slopes of 0°–40°are prone to secondary seismic geohazards,which are mainly concentrated 0–6 km from the river system.Secondary geohazards are not only related to seismogenic fault but also influenced by the associated faults in the earthquake area.The maximum seismic PGA and secondary seismic geohazard number are positively correlated,and the horizontal and vertical ground motions play leading and promoting roles in secondary geohazard formation,respectively.Through the research,the spatial distribution of seismic geohazards is predicted,providing a basis for the formulation of emergency response plans following disasters.

Family selection and evaluation of Larix gmelinii var.principis-rupprechtii(Mayr.)Pilger based on stem analysis data at multiple sites

Larix gmelinii var.principis-rupprechtii(Mayr.)Pilger is an important native tree species in North China with advantages of fast growth,straight trunk,and good wood properties.The multi-year and multi-site breeding research of families of the species has not been reported previously.Based on diameter at breast height(DBH),height and volume of 25 families on four experimental sites,we calculated variance components,genetic parameters,juvenile and mature trait correlations and made genotype main effect plus genotype×environment interaction effect(GGE)biplot based on the breeding values estimated using the method of best linear unbiased prediction(BLUP).Compared with height,DBH and volume had higher heritability and larger variation coefficients,making them the more suitable traits for family selection and evaluation.Based on these,GGE biplots containing 20 combinations of site×age were drawn using data at 13 to 17 years when the interactions between family and location were strong.Test sites classifications based on DBH,and volume were inconsistent,with two categories for DBH and one for volume.The Guyuan site was the most suitable with strong discriminating ability,high representativeness and stability among tree ages.Integrating the ranking results of DBH and volume,families 66,76,82 and 111 were high-yielding and stable,families 78 and96 were high-yielding with above average stability,families72 and 79 were high-yielding with below average stability,whereas stability of family 100 was inconsistent between DBH and volume.Early selection based on DBH was convenient and reliable,and can be made at seven years.This study provides support for the selection of Larix gmelinii var.principis-rupprechtii families in Hebei province and an example for the application of stem analysis data from multiple sites in tree breeding.

“Treat-Repair-Treat”:Management of Left Main Coronary Compression by a Pulmonary Artery Aneurysm in a Patient with Atrial Septal Defect and Significant Pulmonary Hypertension

Left main coronary compression syndrome(LMCS)may complicate pulmonary artery aneurysms(PAA),usually developed in the context of pulmonary arterial hypertension(PAH).We report the case of a 51-year-old female patient with an atrial septal defect(unsuitable for device closure)complicated by a PAA generating a 90%left main stenosis.The significant PAH held us back from immediate surgery.After specific dual PAH-targeted therapy(sildenafil and bosentan),the atrial septal defect could be closed with a unidirectional valved patch;the PAAinduced LMCS was treated by reductive arterioplasty.The postoperative course was uneventful.Follow-up showed clinical improvement,but PAH treatment was still needed.After three months,coronary angiography showed only an insignificant residual left main stenosis,proving that reductive pulmonary arterioplasty was effective in treating LMCS.Any PAA requires further evaluation for LMCS,a dangerous but treatable complication.The“treat-repair-treat”strategy and shunt-closure with a unidirectional valved patch can both improve surgical prospects of LMCS with shunt-related PAH.

Mediastinal lesions in children

The mediastinum is where thoracic lesions most frequently occur in young patients.The histological spectrum of diseases caused by the presence of several organs in the mediastinum is broad.Congenital lesions,infections,benign and malignant lesions,and vascular diseases are examples of lesions.Care should be taken to make the proper diagnosis at the time of diagnosis in order to initiate therapy promptly.Our task is currently made simpler by radiological imaging techniques.