鞍钢三烧添加催化强化剂工业试验

通过在三烧进行添加催化强化剂的工业试验，验证了催化强化剂能增产降耗的试验室研究结果，工业试验表明，烧结添加０．０２２８％催化强化剂，可降低煤耗１０％以上，增产５％。     

催化助燃剂强化烧结工业试验及机理分析

分析了催化助燃剂强化烧结的机理，在考虑马钢工业试验结果与邯郸烧结原料特点基础上制备出功能更好及成本更低的催化助燃剂，在此基础上进行了添加催化助燃剂化烧工业性试验，验证了催化助燃剂具有增产降低低煤耗的功效，试验结果表明：往煤粉中添加0.1%的催化助燃剂，烧结生产可降煤耗10%以上，烧结矿产量和质量均有提高。     

臭氧催化氧化深度处理生化出水中试研究

开展了规模为1 ～2 m3/h的“混凝＋臭氧催化氧化”工艺处理生化出水中试试验,通过试验考察了“混凝＋臭氧催化氧化”工艺连续深度处理焦化废水的效果、生化出水水质变化对废水深度处理系统的冲击和运行成本,为下一步焦化废水深度处理工艺的选择提供了参考.     

催化助燃剂降低烧结煤耗的工业试验

本文讨论了催化助燃剂降低烧结煤耗的工业试验结果，工业试验结果表明，往烧结用煤粉中添加０．１％的催化助燃剂，不仅烧结矿的质量保持不变，而且每吨烧结矿可节约煤粉１０ｋｇ，烧结利用系数也提高７％。     

硫化锌精矿的催化氧化酸浸工艺研究

用硫酸和氧气及催化剂对陕西某地的硫化锌精矿进行了浸出试验研究。详细考察了硫酸和催化剂的用量、浸出温度、浸出时间、液固质量比、搅拌速度等因素对浸出率的影响。试验结果表明:在适宜的工艺条件下,锌的浸出率可达到97%以上。硫以单质硫析出,回收率90%以上。     

从废旧的催化转化器回收贵金属

在通用汽车研究实验室,科学家们从当地旧汽车库购置了使用不同时期和里程的催化转化器,从中试验回收了80％以上的铂和钯,并建立了简便的回收程序。     

催化助燃剂降低烧结煤耗的研究

本文讨论了烧结用催化助燃剂的研制及添加催化助燃剂降低烧结煤耗的烧结杯试验结果，试验表明：在相同的时间与反应条件下，添加催化助燃剂时，煤粉的固定碳转化率主于不中时煤粉的固定碳转化率，添加０．１％催化助燃剂强化烧结，不仅可以保证烧结矿的产质量，而且固体燃耗可降低１５％以上。     

汽车排气控制稀土催化净化技术的研究

稀土催化剂是净化汽车尾气的关键材料，本研究以沸石为主，掺入一定量的拟薄水铝石制备载体，选择ＲＭｘＭ″１－ｘＯｙ为活性组分，制备催化剂。测定了比表面积和强度，用ＸＲＤ、扫描电镜对催化剂结构、活性组分元素分布，表观特性进行了研究。该催化剂是稀土复合氧化物，以ＲＯ２为骨架的固溶体，活性组分沿催化剂径向分布梯度小，活性组分分布均匀。通过台架试验、工况法试验和道路整车试验，对汽车排气有害物质ＣＯ、ＨＣ净化效果极其显著，同时对ＮＯｘ有一定净化作用。     

邯钢二烧添加催化助燃剂的工业试验

通过在一烧二车间进行添加催化助燃剂的工业试验，验证了催化助燃剂具有增产降耗的功效。试验表明，燃结生产添加0．1％的催化助燃剂，可降低煤耗10％以上，而且产量和质量均有提高。     

催化助燃剂降低烧结固体燃耗的工业试验

本文讨论了催化助燃剂降低烧结煤耗的工业试验结果。工业试验结果表明。往烧结用煤粉中添加0．137％的催化助燃剂，不仅烧结矿的质量保持不变，而且每吨烧结矿可节约煤粉5．35kg/t，烧结利用系数也提高3．63％。     

镍基合金控样均匀性初检探讨

采用火花放电原子发射光谱法检测成分时,往往需要自制与被测样含量一致、成分均匀的试块作为控样建立测试程序,因此需要对拟选定的控样试块进行均匀化检验。依据YB/T 4143—2019采用方差分析法检验镍基高温合金控样试块均匀性,需要进一步分析检验方法的精密度,只有控样检验所用方法与日常所用方法具有相同的重复性,判定结果才可靠。以INCONEL 718为研究对象进行均匀性检验的分析结果发现,检验过程中所用检验方法重复性方差较大,存在不均匀样品判为均匀的误判可能。采用内插法对测试系统的漂移进行了校正,并重新计算了均匀性检验参数。结果表明,该试块漂移校正前Fe元素检验结果是均匀的,漂移校正后检验结果为不均匀。除Fe元素外,其他元素均匀性检验结果均为均匀。讨论了Fe元素作为Balance元素存在不均匀性分布存在的根本原因,并采用该试块作为控样检测了GH4169标准物质的化学成分,检测结果的正确度符合GB/T 38939—2020及文献要求。实验方法适用于工矿企业自制火花放电原子发射光谱控样的均匀性检验。     

Z向钢板超声波探伤不合格的原因分析

针对Z向钢板探伤不合格的现象,通过低倍、金相、Z向拉伸试验等检验,探讨了缺陷产生的原因。结果表明,钢中氢含量高是导致探伤不合格的主要原因。通过采取措施,提高了探伤合格率。     

Test anxiety, academic performance, and cognitive appraisals.

Investigated the impact of test anxiety on test performance and the cognitive appraisals of test-anxious students. To overcome limitations of previous research, state and dispositional measures of test anxiety were used over repeated performance trials. 62 Ss who were enrolled in an undergraduate statistics course that required multiple examinations were administered the State-Trait Anxiety Inventory and served as Ss. Ss' expectations, thoughts, and performance were assessed at each of the 4 examination occasions. Results indicate that test anxiety was related to poor test performance both early and late in the term. When state anxiety levels were controlled for, the test anxiety–test performance relation was apparent only during the later stages of the course. The pattern of Ss' anxiety and appraisals suggests that test-anxious Ss experienced most doubt and concern early in the term. (14 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Predictive validity of psychometric evaluations of supervisors.

31 higher level employees in 1 firm and 26 in another were assessed by objective test batteries. Clinical interpretations of test data, test scores, and other predictors were analyzed with reference to criterion personality ratings and management decisions at a follow-up point of 3? yr. for the 1st sample and 7 yr. for the 2nd. Predictive validity of test assessments was generally satisfactory in the 1st sample, although not pragmatically superior to that of certain objective data. Prediction was less satisfactory in the 2nd sample, but more unique to test data. A matching study indicated some correspondence of test reports and criterion personality sketches in the 2nd sample. Uninterpreted test scores were not generally valid except as measures of intelligence. (20 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

镍冠生产的阴极极板试验研究

介绍了三种不同镍冠极板电解生产的试验情况,对试验结果进行了分析及对比,为下一步试验工作提供了建议及参考.     

Psychological tests: Clinical usage versus psychometric quality.

31 academic psychologists ranked the 10 most used psychological tests for their "overall quality of psychometric refinement." Comparisons were made between test quality and test usage in 1969 and 1974. A significant relationship was found between test quality ranks and test usage ranks in 1974. Agreement among psychologists' rankings was high. Results show that objective-format tests, which are beginning to realize a greater use clinically than projective techniques, were viewed as better psychometrically. Although a significant relationship was found between test quality and usage, only one-third of the variance in test usage was accounted for by test quality, indicating that test usage was not primarily a function of test quality. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Tissue concentrations and pharmacokinetics of florfenicol in broiler chickens

OBJECTIVE: To compare the Bard BTA (bladder tumour antigen) test with voided urine cytology (VUC) in the diagnosis of recurrent bladder cancer (BC). METHODS: Urine specimens for the BTA test and VUC were collected on the same day as before cystoscopy from patients undergoing routine surveillance cystoscopy for recurrent BC. The pathologists performing VUC were blinded to the results of the BTA test. RESULTS: BC was identified by cystoscopy and biopsy in 39 of 164 study participants. The overall sensitivities of the BTA test and VUC were 54 and 28%, respectively (p < 0.05). The BTA test was more sensitive than VUC for all tumour stages and grades. For > or = T2 tumours and grade 3 tumours, respectively, the difference was statistically significant (p < 0.05). The specificities of the BTA test and VUC were 92 and 97%, respectively. Both a false-positive BTA test and VUC were found to predict recurrence. CONCLUSION: The BTA test is equal or superior to VUC in the detection of BC in patients undergoing routine surveillance for recurrent BC.     

双膜法用于钢铁厂综合性工业废水的中试研究

介绍了鞍钢尝试用双膜法处理钢铁企业综合性污水的试验目的、过程及结论,验证了实验工艺的可行性,初步确定了用于今后工程建设的主要工艺流程,并以此为依据,调整相关技术参数,为下一步开展工程设计提供参考和借鉴。     

Effects of math self-concept, perceived self-efficacy, and attributions for failure and success on test anxiety.

Structural equation modeling was used to test a model of test anxiety. Variables in the model included gender, number of years since one's last math course, attributions for failure and success, math self-concept, perceived self-efficacy, achievement, general test anxiety, and statistical test anxiety. Failure and success attributions were found to influence general test anxiety and statistical test anxiety for both male and female students. Women who attributed success to behavioral causes were found to have higher levels of math self-concept than women attributing success to external causes. For men, those attributing failure to external causes were found to have higher levels of the worry component of statistical test anxiety. Math self-concept was negatively related to both general test anxiety and statistics test anxiety, whereas perceived self-efficacy had a negative relationship with the worry component of statistics anxiety. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reactions to cognitive ability tests: The relationships between race, test performance, face validity perceptions, and test-taking motivation.

The relationships among race, face validity perceptions, test-taking motivation, and test performance on a cognitive ability test were examined. Undergraduates completed 2 parallel cognitive ability tests and a test reactions measure. Results showed that test-taking motivation was related positively to subsequent performance on a parallel test even after the effects of race and performance on the first test were controlled. The effect of race on subsequent test performance was found to be mediated partially by motivation that provided evidence that some portion of the Black–White difference in test performance may be explained through differences in test-taking motivation. Results also indicated that Black–White differences in face validity perceptions of the test may be a function of Black–White differences in test performance. Face validity perceptions of the test affected subsequent performance on the parallel test but only indirectly through test-taking motivation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)