Parents'' report of sensory responsiveness and temperament in preterm infants

This article shows the results of a 10-year follow-up study conducted on a cohort of 870 patients affected by severe chronic airflow obstruction (CAO) on spirometric tests. The main aims of the study were to identify those factors associated with reduced survival in CAO patients and to evaluate the effectiveness of a care program on patients' survival. The analysis compared the survival time and causes of death between patients who showed adherence and patients who did not show adherence to the care program. The most important results can be summarized as follows: (1) CAO patients have a high mortality rate for acute respiratory failure, cor-pulmonale, and lung cancer; (2) patient's age at the time of selection to enter follow-up influences the death hazard; (3) patients who need long-term oxygen treatment (LTOT) have a higher death hazard than those who don't need it; (4) the higher is FEV1 or PaO2 value at the time of selection, the lower the death hazard; (5) patients who need, and regularly take, long-term oxygen treatment have a lower death hazard compared to those who need it, but do not take it properly; and (6) patients with a partial reversible airway obstruction (pRAO) who regularly attend the clinic for planned check-ups, have a lower death hazard compared to those who have the same characteristics, but do not show adherence to the care program. These results indicate that an organized program to treat severe CAO patients may improve their survival.     

Parents'' evaluations of wheezing in their children with asthma

Two cases of Behcet's disease associated with myelodysplastic syndrome are described. Both patients showed a chromosomal abnormality, trisomy 8. Based on the laboratory findings in our patients and a careful review of the literature of similar cases, the association of the chromosomal abnormality with the pathogenesis of Behcet's disease is suggested.     

Untersuchungen zum Vorgang der Kalkauflösung

Theorie der Infiltration eines Kalkstückes. Untersuchung der Infiltration von Kalkkörpern mit CaO-FeO-Schlacke. Versuche über Auflösung und Zerfall von Kalkstücken in Schlacke. Deutung des Auflösevorganges unter Berücksichtigung des Brenngrades.     

高炉耐火材料使用性能的研究

阐述了高炉耐火材料使用性能对高炉长寿的重要性,介绍导热率、抗铁水溶蚀性、抗碱侵蚀性、抗渣侵蚀性和微气孔等指标的试验方法和试验装置,对比分析了国内外典型高炉耐火材料的重要使用性能。此外,对完善高炉耐火材料产品标准和加强高炉耐火材料新产品开发工作提出了建议。     

Parents'' developmental expectations and child characteristics: longitudinal study of children with developmental delays and their families

Infection of isolated organs of the reproductive system by Trypanosoma cruzi has been described since Chagas' disease was first studied. A detailed histopathological analysis of mice acutely infected with T. cruzi CL strain showed colonization of male (preputial glands and skin, penis, testicular albuginea, epididymis, vas deferens, seminal vesicles, prostate, coagulative, bulbo urethral and urethral glands) and female (vagina, uterus, oviduct, ovary, mesovary, clitoris and mammary glands) structures of the reproductive system. The results presented herein demonstrated invasion of epithelial cells, pronounced colonization of the epididymis and male genital adnexa, but absence of parasitism in penile corpora cavernosa.     

Beschleunigung der Kalkauflösung bei den Stahlerzeugungsverfahren

Bildung einer den Kalk umschließenden Dicalciumsilicathülle in Abhängigkeit vom Eisenoxidgehalt der Schlacke. Auflösungsvorgang von synthetischen, gesinterten Kalk-Flußmittel-Mischungen in LD-Schlacken unter betriebsnahen Bedingungen. Bestimmung der Erweichungs- und Fließtemperaturen. Untersuchungen des Gefüges. Verhalten der gesinterten Proben gegen Feuchtigkeit und in flüssiger Schlacke in Abhängigkeit vom Flußmittelanteil der Proben. Folgerungen aus der Anwendung von teilverschlacktem Kalk.     

高速列车铸钢制动盘材料的研究

为满足我国高速列车快速发展、实现盘形制动装置国产化的需要,选用铸钢作为制动盘材料,对其化学成分和盘结构进行设计,并对制动盘材料进行性能研究,通过1:1制动动力试验台对制动盘进行验证试验.研究结果表明,所研制的高速列车铸钢制动盘材料在常温及高温下的力学性能良好,抗热变形能力和热稳定性能优异,韧性、耐磨性和铸造工艺性能好,是理想的制动盘材料:试制的铸钢制动盘紧急制动距离短,盘面光洁,完全满足我国高速动车组制动技术条件及<铁路主要技术政策>的规定;铸钢制动盘与粉末冶金闸片相匹配的摩擦副摩擦制动性能良好,而且安全可靠,能满足200 km/h和300 km/h高速动车组的运行要求.     

Sensing performances to low concentration acetone for palladium doped LaFeO_3 sensors

The PdCl_2 was mixed with nanocrystalline powders LaFeO_3 and subsequently followed by an annealing of 800 ℃. PdO phase was formed and almost distributed uniformly on the surface of LaFeO_3 nano-particles. With an increase of PdO amounts in composite powders, sensing sensitivity Rg/Ra to low concentration acetone or ethanol for Pd doped LaFeO_3 sensors increased at first, underwent the maximum with 2 wt.% PdCl_2 dopant, and then doped again. Interestingly, appropriate Pd doping in LaFeO_3 changed the selectivity behavior of gas sensing. LaFeO_3 sensor showed good selectivity to ethanol, but 2 wt.% Pd doped LaFeO_3 sensor showed good selectivity to acetone. The sensitivity for LaFeO_3 at 200 ℃ was 1.32 to 1 ppm ethanol, and 1.19 to 1 ppm acetone. Whereas the sensitivity for 2 wt.% Pd doped LaFeO_3 at 200 ℃ was 1.53 to 1 ppm ethanol, and 1.9 to 1 ppm acetone. The 2 wt.% Pd doped LaFeO_3 sensor at 200 ℃ showed very short response time(4 s) and recovery time(2 s) to 1 ppm acetone gas, respectively. Such results showed that 2 wt.% Pd doped LaFeO_3 sensor is a new promising sensing candidate for detecting low concentration acetone.     

Untersuchungen zur Kalkauflösung in CaO-FeO-SiO2-Schlacken

Untersuchung der Infiltration von in flüssige Schlacke getauchten gesinterten Kalkkörpern. Bestimmung der Ursachen für die Kalkauflösung. Einfluß der chemischen Zusammensetzung und Temperatur der Schlacken, der Dichte der Kalkprobekörper sowie der Eintauchdauer. Mikroskopische Untersuchung und Deutung des Auflösungsvorganges.     

Mathematics self-efficacy and mathematics performances: The need for specificity of assessment.

In this study, 391 students were asked to provide 3 types of mathematics self-efficacy judgments: confidence to solve mathematics problems, confidence to succeed in math-related courses, and confidence to perform math-related tasks. Criterial tasks were solution of math problems and choice of math-related majors. As hypothesized, students' reported confidence to solve the problems they were later asked to solve was a more powerful predictor of that performance than was either their confidence to perform math-related tasks or to succeed in math-related courses. Similarly, confidence to succeed in math-related courses was a stronger predictor of choice of math-related majors than was either confidence to solve problems or to perform math-related tasks. Results support A. Bandura's (1986) contention that, because judgments of self-efficacy are task specific, measures of self-efficacy should be tailored to the criterial task being assessed and the domain of functioning being analyzed to increase prediction. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

不锈钢多孔材料过滤性能影响参数的实验研究

以气雾化奥氏体316L不锈钢细球形粉末为原料, 采用粉末冶金法, 制备成尺寸为d32 mm×2 mm的圆片状过滤材料。研究了烧结工艺及压制压力对烧结坯过滤性能的影响, 包括开孔隙率、最大孔径及其透气度。实验确定了如下最佳工艺参数: 烧结温度950℃, 保温时间1 h, 压制压力200 MPa; 在此条件下得到的多孔不锈钢过滤材料的开孔隙率为23.8%, 最大孔径为2.52μm。在100 kPa压力下该材料的透气度可达5.63 m3/(h·kPa·m2), 抗拉强度σb 达113.6 MPa。     

新型棒材线设备及其特点

介绍了涟源钢厂新建棒材线钢种、工艺流程，设备布置及相关设备的功能特点，着重介绍了Φ350mm轧机的有关参数。     

Immuno-prevention in newborn infants and infants

The author describes two cases of ambulatory iliac phlebitis occurring in young women, one pregnant, the other taking synthetic oestrogen-progestogen drugs. Anti-coagulants were contraindicated because of the pregnancy in the first case, and because of practical obstacles to their correct use in the second. In consequence both cases were treated as outpatients by physical compression (Nard's method), without any anticoagulant medication : the results were striking and lasting.     

Nitric oxide inhalation therapy for newborn infants

Binding of NO to heavy metal-containing proteins probably accounts for many of its physiologic actions. NO inhalation is a promising new treatment for various disorders of neonates. The therapy is most likely to benefit premature neonates who are hypoxemic despite breathing pure oxygen and those who suffer from impaired carbon dioxide elimination. Newborn infants who have congenital heart disease may benefit from inhaled NO therapy if their disease involves some form of pulmonary venous hypertension or if they have recently undergone surgery involving cardiopulmonary bypass grafting. The use of NO in infants with PPHN might obviate the need for ECMO or other invasive treatment methods. Neonates with CDH seem likely to benefit marginally from NO therapy. Minimizing the toxicities of NO inhalation therapy requires that the physicians understand the nuances of infant care. The therapeutic value of increasing carbon dioxide elimination with NO inhalation warrants further investigation.     

Manual preference for tapping in infants.

Used 2 tapping tasks to determine whether individual infants' right- or left-hand (RH and LH, respectively) preference for unimanual and bimanual tapping corresponded to their handedness in bimanual manipulation tasks (bimanual handedness) during the 2nd yr of life, and whether the developmental onset of a manual tapping preference occurred before or after the onset of bimanual handedness at the end of the 1st yr of life. At each of 2 age levels (15 and 22 mo, 24 Ss each), most infants demonstrated an RH preference in both tapping tasks, whether they showed bimanual right- or left-handedness. Nevertheless, a sizable minority of bimanual LH, but not RH, demonstrated an LH preference across tapping tasks. Since research with adults suggests left-hemisphere specialization for speech in almost all RH and many LH individuals, it is possible that a manual preference for tapping in infants, with appropriate empirical validation, will prove a reliable index of this specialization. In addition, 16 10-mo-olds demonstrated a manual preference in the unimanual tapping task whether they showed bimanual handedness, but few demonstrated a preference in the bimanual tapping task. This latter finding is consistent with past research using other handedness tasks with infants, which suggests that unimanual handedness precedes bimanual handedness. (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Speech as reinforcing stimulation for infants.

32 5-15 wk old infants were exposed to 1 of 4 experimental conditions that involved (a) the presentation of natural speech stimuli contingent on the infants' nonnutritive sucking, (b) the withdrawal of speech stimuli contingent on the infants' nonnutritive sucking, (c) the noncontingent presentation of speech stimuli, and (d) no speech stimuli. Only the presentation of speech stimulation contingent on the infants' nonnutritive sucking resulted in a significant change in the rate of such sucking compared to infants receiving no sound stimulation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)