《中国钼业》来稿须知

1刊登范围和要求 本刊主要刊登钼及其共（伴）生金属（钨、铼、金、银、铂、镍、钯、铱、铜、铁、、锌、钙、铅、铀、锡等）的地质、采矿、选矿、冶炼、合金、加工、化工、有价金属回收与利用、设备、分析检测等领域内的”四新”（新产品、新工艺、新技术、新材料）科技与成果,还报道钼市场动态、行业信息、专利技术等。     

《中国钼业》来稿须知

1刊登范围和要求 本刊主要刊登钼及其共（伴）生金属（钨、铼、金、银、铂、镍、钯、铱、铜、铁、、锌、钙、铅、铀、锡等）的地质、采矿、选矿、冶炼、合金、加工、化工、有价金属回收与利用、设备、分析检测等领域内的”四新”（新产品、新工艺、新技术、新材料）科技与成果,还报道钼市场动态、行业信息、专利技术等。     

电感耦合等离子体原子发射光谱法测定高碳除尘灰中11种元素

实验重点探讨了高含量碳对除尘灰样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素测定的影响,并解决了除碳的问题。样品使用马弗炉高温除碳,采用盐酸-硝酸-氢氟酸-高氯酸消解样品灰分,选择了镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的分析谱线和扣背景模式,建立了使用电感耦合等离子体原子发射光谱法(ICP-AES)测定高碳除尘灰中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌等元素的方法。在仪器最佳工作条件下,各元素校准曲线线性相关系数r均大于0.999 5,方法检出限在1.08～26.01 mg/kg之间。方法应用于除尘灰实际样品中镁、铝、钾、钙、铬、锰、铜、钡、铅、镉、锌的测定,结果的相对标准偏差(RSD,n=11)为0.90%～7.1%,目标元素的加标回收率为90%～117%;按照实验方法测定除尘灰中镁、铝、钾、钙、锌,结果与火焰原子吸收光谱法(FAAS)的测定结果相吻合。     

《鞍钢技术》投稿须知

正(1)来稿应为针对鞍钢及国内外矿山、焦化、烧结、炼铁、炼钢、轧钢、金属材料、节能环保、耐火材料、能源动力、自动化及仪表、理化检验、综合利用、机电技术等钢铁领域上下游产业链相关的新技术、新装备和新工艺等方面撰写的论文,应做到选题新颖、工艺技术先进、试验研究成果借鉴性强。     

沁阳市沁龙化学防腐有限公司

河南省沁阳市沁龙化学防腐有限公司是从事研制生产多功能新型螺旋溜槽、摇床、旋流分级机、磁选机、浮选机、搅拌槽、打砂机、玻璃钢冷却塔、风机、管道、防腐贮罐等多种产品的专业公司,已有近三十年的生产历史,通过了lS09001:2000质量体系认证,主导产品为多功能新型螺旋溜槽、摇床,是选别有色金属、黑色金属、非金属、贵重金属的理想选矿设备,如金矿、银矿、沙金矿、锅矿、钛铁矿、硫铁矿、赤铁矿、褐铁矿、铬铁矿、钨矿、钽泥矿、煤矿、独居石、蓝宝石、重晶石、金红石、锆英石、硅砂等。现有8000多台设备在全国各地矿山使     

辉光放电光谱法测定因瓦合金中14种元素

采用11种与因瓦合金成分含量相接近的镍基合金标准样品绘制校准曲线,建立了基本不需要样品处理即可对因瓦合金中14种元素(C、Si、Mn、P、S、Ni、Cr、Mo、Cu、Al、Nb、Ti、Co、Fe)同时测定的辉光放电光谱法。确定辉光光谱仪检测因瓦合金的最佳条件:模块电压和相电压分别为8.22 V和3.82 V;功率为70 W;冲洗时间为80 s;积分时间为60 s。以各元素质量分数为横坐标,其对应的光谱强度为纵坐标绘制校准曲线,各元素校准曲线的相关系数均在0.99以上。采用实验方法对因瓦合金实际样品进行分析,结果显示:Cr、Ni、Mo、Ti、Fe的质量分数均大于0.3%,各元素测定值的相对标准偏差(RSD,n=11)均不大于1%;C、Si、Mn、P、S、Cu、Al、Nb、Co的质量分数均小于0.3%,各元素测定值的RSD(n=11)均小于5%。将实验方法应用于对因瓦合金样品中14种元素的测定,测得结果与滴定法测定Ni和Fe、高频燃烧红外吸收法测定C和S、电感耦合等离子体原子发射光谱法测定Si、Mn、P、Cr、Mo、Cu、Al、Nb、Ti和Co元素的结果基本一致。     

《中国钼业》来稿须知

1刊登范围和要求本刊主要刊登钼及其共(伴)生金属(钨、铼、金、银、铂、镍、钯、铱、铜、铁、锌、钙、铅、铀、锡等)的地质、采矿、选矿、冶炼、合金、加工、化工、有价金属回收与利用、设备、分析检测等领域内的"四新"(新产品、新工艺、新技术、新材料)科技与成果,还报道钼市场动态、行业信息、专利技术等。     

《中国钼业》来稿须知

1刊登范围和要求本刊为中国科技核心期刊。主要刊登钼及其共(伴)生金属(钨、铼、金、银、铂、镍、钯、铱、铜、铁、锌、钙、铅、铀、锡等)的地质、采矿、选矿、冶炼、合金、加工、化工、有价金属回收与利用、设备、分析检测等领域内的     

国家拟出台严厉措施淘汰落后产能

国家拟出台进一步加强淘汰落后产能工作的通知,协调发改委、工信部、环保部、国土部、商务部、海关总署、财政部、央行、银监会、质检总局、安监总局、工商总局、电监会、能源局等,以严厉措施,重点完成电力、煤炭、钢铁、水泥、有色、焦炭、造纸、皮革、     

《太钢科技》投稿指南

《太钢科技》是太原钢铁（集团）有限公司根据党和国家的政策、法令创办的,经山西省新闻出版局批准备案的科学技术刊物。主要刊登太钢矿山、耐火、焦化、炼铁、炼钢、连铸、轧钢、锻造、理化检验、能源、机械、土建、计控、自动化、环保、安全等专业以及科研、工艺质量攻关、产品开发、技术开发和技术管理等方面的试验研究、科技成果、技术总结、综合评述和经验介绍等。     

锌精馏炉平口塔盘的研制与应用

介绍了韶冶锌精馏炉平口塔盘的研制、加工、使用过程中出现的问题及解决措施。     

Role of large-scale slip in mode II fracture of bimaterial interface produced by diffusion bonding

Bimaterial interfaces present in diffusion-bonded (and in-situ) composites are often not flat interfaces. The unevenness of the interface can result not only from interface reaction products but also from long-range waviness associated with the surfaces of the component phases bonded together. Experimental studies aimed at determining interface mechanical properties generally ignore the departure in the local stress due to waviness and assume a theoretically flat interface. Furthermore, the commonly used testing methods involving superimposed tension often renders the interface so extremely brittle that if microplastic effects were present it becomes impossible to perceive them. This article examines the role of waviness of the interface and microplastic effects on crack initiation. To do this, a test was selected that provides significant stability against crack growth by superimposing compressive stresses. Mode II interface fracture was studied for NiAl/Mo model laminates using a recently developed asymmetrically loaded shear (ALS) interface shear test. The ALS test may be viewed as opposite of the laminate bend test. In the bend test, shear at the interface is created via tension on one surface of the bend, while in the ALS test, shear is created by compression on one side of the interface relative to the other. Normal to the interface, near the crack tip, an initially compressive state is replaced by slight tension due to Poisson’s expansion of the unbonded part of the compressed beam.     

Influence of various impression procedures for removable partial denture on displacement of soft mucosal tissue

In the impression-taking procedure for the distal extension removable partial denture, the pressure produced at the interface of the soft mucosal tissue and the impression material is the most important factor for the stability of the saddle under functional load. However, a review of the literature revealed little information about the displacement of the soft tissue caused by the impression pressure. In the present study, to investigate the influence of various impression procedures on the magnitude of the soft tissue displacement more precisely, a new three-dimensional deformation measurement system was devised. Compared to the previous studies, the greatest advantage of the system is that the hardened impression material can be surveyed directly without substituting a dental stone. It was found that, in the investigation using a partially edentulous simulated model, the amount of the subsidence in the soft tissue was increased as the thickness of the spacer of the impression tray was reduced or the seating speed of the tray was fast. Especially in the buccal area, a large amount of vertical displacement was present compared to the midridge and lingual area. Thus it was suggested that many factors are associated with the form of soft tissue under impression loading.     

Hybrid fixation modular tibial prosthesis. Early clinical and radiographic results and retrieval analysis

A prosthetic tibial component has been designed with features for fixation to bone using a combination of acrylic cement and ingrowth interfaces. This hybrid concept affords the component the immediate stability of cement fixation and the potential long-term stability of biologic fixation. The ingrowth interfaces (coupled with the central stem) are intended to shield the cement interface beneath the tibial tray from the tensile liftoff forces that result from eccentric loading, while avoiding the fretting and osteolysis associated with screw fixation. A disassembly capability allows the tray to be removed from the stemmed anchorage assembly, facilitating component extraction and limiting bone loss. A clinical and radiographic review of 50 consecutive primary total knee arthroplasties with a mean follow-up period of 35 months revealed stable interfaces with no progressive radiolucencies and minimal remodeling changes. The mean Knee Society knee score was 92.2. At final follow-up evaluation, 88.6% of patients noted no or mild (occasional) pain. Retrieval of three prosthetic knees with chronic sepsis showed extensive ingrowth into the porous interfaces and an osteointegrated bony sleave around the smooth central stem.     

卡罗塞尔卷取机大转盘力学性能分析

文章利用三维建模软件对结构复杂的卡罗塞尔卷取机大转盘进行了建模。在此基础上,利用有限元分析软件ANSYS对大转盘进行了最恶劣工况下的力学分析,直观展现了大转盘存在的应力、应变,为掌握卡罗塞尔卷取机的力学性能提供了可靠的理论分析依据。     

Initiation of dendrites by crystal imperfections

The development of dendrites from an initially flat, stationary solid/liquid interface in a transparent material was observed and photographed. It was found that the dendrites originated from preferred areas on the interface immediately adjacent to grain boundaries, subboundaries, and trapped foreign particles. The built-in large-amplitude distortions of the interface adjacent to these imperfections initiated dendritic growth under conditions which did not produce dendritic growth on imperfection-free regions of the interface. It is concluded that considerations of the stability of planar interfaces must take into account the influence of the imperfections which are present in almost all solids.     

基于ZnO结瘤下SiC塔盘导热性能研究探讨

为了研究韶关冶炼厂铅塔燃烧室SiC塔盘的外壁在存在ZnO结瘤层下的导热性能 ,根据ZnO结瘤层的不同厚度 ,并结合对塔盘的热工测试 ,对铅塔燃烧室烟气向ZnO结瘤层的外表面的辐射传热以及通过ZnO结瘤层导入塔盘内的热量进行了详细的分析和推导 ,结果发现 :随着ZnO结瘤层的增加 ,ZnO结瘤层外表面的温度升高 ,而沿ZnO结瘤层传入塔盘内的热量急剧减少。当ZnO结瘤层厚度为 3 0mm时 ,传入塔盘内的热量为未结瘤时的 3 0 3 4%。这种情况将在很大程度上减少锌蒸气的产量以及降低锌蒸气的质量     

氧化铝厂石灰炉炉底转盘跑偏分析与改造

对石灰炉炉底转盘经常跑偏问题进行受力分析和在线测试，并对炉底转盘机构进行了改造。     

Placement of multiple and different stent types for very long dissections during coronary angioplasty

A coordinate measurement machine with laser probe was used to measure the vertical distortion of the casts produced by use of three types of impression materials (irreversible hydrocolloid, condensation silicone, and addition silicone) and two types of trays (stock and custom trays). Results indicated that all impression groups showed positive vertical distortion (ranging from 0.00566 to 0.30299 mm) at the edentulous ridges and palatal area. The amount of the vertical distortion was greatest at the palatal area and was followed by the high edentulous ridge and the low edentulous ridge. Addition silicone, with either custom tray or stock tray, was the most accurate impression material. Condensation silicone was more accurate than irreversible hydrocolloid in custom tray impression. However, in stock tray impression the irreversible hydrocolloid was more accurate than the condensation silicone. The results suggest that, with careful manipulation, irreversible hydrocolloid with stock tray impression may provide a satisfactory cast for fabricating the framework of a distal extension removable partial denture.     

Renal expression of parathyroid hormone-related protein (PTHrP) and PTH/PTHrP receptor in a rat model of tubulointerstitial damage

The effect of a meniscal bearing on knee laxity in anterior cruciate ligament-sacrificing total knee arthroplasty was evaluated in 7 cadaver knees using a knee testing device that measured knee flexion angle as well as laxity to medial-lateral, anterior-posterior [AP], and rotational loads. A standard fixed tibial component and mobile tibial components (AP sliding, rotationally sliding, and AP and rotationally sliding) were used to evaluate AP, rotational, and varus-valgus stability and maximal flexion and extension with the neutrally positioned and malrotated tibial tray. The AP movable components increased AP laxity, and the fixed component decreased rotational laxity significantly when compared with the normal knees. The rotationally movable components did not change knee laxities significantly even when the tibial tray was malrotated. No significant difference among the components was detected when the maximal flexion and extension angles were compared in the neutrally positioned tibial tray. Malrotation of the tibial tray decreased the maximal extension angle in the fixed component. This study showed that the rotationally movable component can achieve near-normal laxity regardless of tibial tray rotation, but AP mobility of the bearing produces AP laxity that could lead to implant failure.