Measurements of the ^(107)Ag neutron capture cross sections with pulse height weighting technique at the CSNS Back-n facility

Silver indium cadmium(Ag–In–Cd) control rod is widely used in pressurized water reactor nuclear power plants,and it is continuously consumed in a high neutron flux environment. The mass ratio of ^(107)Ag in the Ag–In–Cd control rod is 41.44%. To accurately calculate the consumption value of the control rod, a reliable neutron reaction cross section of the ^(107)Ag is required. Meanwhile,^(107)Ag is also an important weak r nucleus. Thus, the cross sections for neutron induced interactions with ^(107)Ag are very important both in nuclear energy and nuclear astrophysics. The(n, γ) cross section of ^(107)Ag has been measured in the energy range of 1–60 eV using a back streaming white neutron beam line at China spallation neutron source. The resonance parameters are extracted by an R-matrix code. All the cross section of ^(107)Ag and resonance parameters are given in this paper as datasets. The datasets are openly available at http://www.doi.org/10.11922/sciencedb.j00113.00010.

The Influence of Secular Trends in Body Height and Weight on the Prevalence of Overweight and Obesity among Chinese Children and Adolescents

Objective To explore the influence of secular trends in body height and weight on the prevalence of overweight and obesity among Chinese children and adolescents. Methods The data were obtained from five cross-sectional Chinese National Surveys on Students＇ Constitution and Health. Overweight/obesity was defined as BMI-for-age Z-score of per the Wold Health Organization （WHO） reference values. Body height and weight for each sex and age were standardized to those reported in 1985 （standardized height＂ SHY, standardized weight： SWY） and for each sex and year at age 7 （standardized height： SHA; standardized weight： SWA） using the Z-score method. Results The prevalence of overweight/obesity in Chinese children was 20.2% among boys and 10.7% among girls in 2010 and increased continuously from 1985 to 2010. Among boys and girls of normal weight, SHY and SHA were significantly greater than SWY and SWA, respectively （P 〈 0.001）. Among boys and girls with overweight/obesity, SHY was significantly lower than SWY （P 〈 0.001）, and showed an obvious decreasing trend after age 12. SHA was lower than SWA among overweight boys aged 7-8 years and girls aged 7-9 years. SHY/SHW and SHA/SWA among normal-weight groups were greater than among overweight and obese groups （P 〈 0.001）. Conclusion The continuous increase in the prevalence of overweight/obesity among Chinese children may be related to a rapid increase in body weight before age 9 and lack of secular increase in body height after age 12.

Problem of the reference height of the projectile trajectory as a reduced meteo-ballistic weighting factor

This paper deals with the issue of preparation of the aiming angles with the use of tabular firing tables and needed determination of the ballistic elements μ_B(ballistic wind w_B,w_(xB),w_(ZB),ballistic(virtual) temperature τ_B.ballistic density p_B) from the standardized met messages.The weighting factors are used for the calculation of ballistic elements μ_B that are incorporated into the trajectory calculations characteristics of weapon and ammunition.Two different methodologies practically used in the praxis are analysed and compared.For the comparison of the two methodologies the reference height of trajectory determined from the weighting factor functions is employed.On the basis of the analyses conducted,the potential for further increase in accuracy of these aiming angles preparation methods is pointed out.

Exact Statistical Distribution and Correlation of Human Height and Weight: Analysis and Experimental Confirmation

The statistical relationship between human height and weight is of especial importance to clinical medicine, epidemiology, and the biology of human development. Yet, after more than a century of anthropometric measurements and analyses, there has been no consensus on this relationship. The purpose of this article is to provide a definitive statistical distribution function from which all desired statistics (probabilities, moments, and correlation functions) can be determined. The statistical analysis reported in this article provides strong evidence that height and weight in a diverse population of healthy adults constitute correlated bivariate lognormal random variables. This conclusion is supported by a battery of independent tests comparing empirical values of 1) probability density patterns, 2) linear and higher order correlation coefficients, 3) statistical and hyperstatistics moments up to 6th order, and 4) distance correlation (dCor) values to corresponding theoretical quantities: 1) predicted by the lognormal distribution and 2) simulated by use of appropriate random number generators. Furthermore, calculation of the conditional expectation of weight, given height, yields a theoretical power law that specifies conditions under which body mass index (BMI) can be a valid proxy of obesity. The consistency of the empirical data from a large, diverse anthropometric survey partitioned by gender with the predictions of a correlated bivariate lognormal distribution was found to be so extensive and close as to suggest that this outcome is not coincidental or approximate, but may be a consequence of some underlying biophysical mechanism.

Height/Length and Weight Growth Curves and Growth References of Children Aged 0 - 7 in Chongqing by GAMLSS

Aim: Using the generalised additive model for location, the scale and shape (GAMLSS), the standard of height (length), weight and percentage curve of children were formulated to understand the growth law in Chongqing and to provide a reference for clinical and preventive health care work of paediatrics in West China. Methods: Data were collected from the health clinic dataset of children aged 0 - 7 years in the Department of Child Health Care of a Third-Class A hospital in Chongqing from 2010 to 2017. By applying the GAMLSS technology and taking D(μ, σ, ν, τ) as the specific distribution form, BCT as the link function, P-spline function and cubic splines function as the smoothing function, the unit value of age-specific standard deviation of height (length) and weight were obtained, and the percentile map was drawn. Results: Based on the principle of minimum AIC and SBC values, BCT distribution was chosen as the model of the link function. Fitting results of height (length) and weight parameters of boys and girls, standard deviation tables of age and percentile curves were obtained. Conclusions: This study was an exploration of using GAMLSS method to establish a reference value range in the field of children’s growth and development in China. It could supplement the relevant data of Chongqing area for Reference standard for growth and development of children under 7 years of age in China, and also provide a reference for the rational diagnosis of children’s short stature and malnutrition in Chongqing.

Anthropometric studies on medical students of Nepal and Sri Lanka:height and weight

Nutritional status of a population or an individual could be assessed by clinical,biochemical and anthropometric means.It is widely used in the monitoring of growth and assessment of the nutritional status of children and adults.Even though a large number of anthropometric studies is done in Nepal and Sri Lanka,on various projects related to the nutritional aspects,but only few have been done on anthropometry and due to lack of information on anthropometric data of Nepalese and Sri Lankan medical students,the present study was initiated at Nepal Medical college and Faculty of Medicine,University of Peradeniya,Sri Lanka.The aim of the study was to measure height and weight of medical students of Nepal Medical College and Faculty of Medicine,University of Peradeniya.A total of 1228(males 681;females 547)medical students participated in the study.The ratio of male to female was 1.24:1.The height was measured,to the nearest 0.1 cm without shoes,using a measuring tape affixed to the wall.The weight was recorded using weighing scale,with minimum clothes and without shoes to the nearest 0.1kg.Two tail unpaired t’test was performed to compare mean values.The percentile values were obtained using Microsoft excel for Windows 98.The age of the students varied from 18-26 years with a mean±SD of 20.77±1.17 and 20.90±1.10 in males and females respectively.The heights of the male and female medical students werel.65±0.08 and 1.61±0.08 and the weight was 59.70±9.26 and 55.54±9.16 respectively.The percentile values obtained for height and weight were compared with National Centre for Health statistics(NCHS) standards.The 50th percentile value of males height and weight corresponded to the 20th percentile and below the 20th percentile values respectively of the NCHS standard.The 50th percentile value of female’s height and weight corresponded to less than 10th and 15th percentiles respectively.The height and weight of only 9 males and 8 females were above the 50th percentile value of NCHS standards.The study reveals that the Nepalese medical students and Sri Lankan medical students are underweight and shorter compared to western standards.

Hepatic Morphometric Correlation with Biophysical Profiling of Height

Introduction: Clinical assessment of hepatic span is usually subjective. And is based on the experience of the clinician. This is what has led to this study in using Biophysical profiling of Heights, Weights, and Body mass index to find the normal hepatic span of every individual. This study was conducted at HMG Hospital Limited, Abonnema in Rivers State in affiliation with the University of Port Harcourt. Methodology: The biophysical sampling method was instituted to select respondents. At the same time, a radiological formula was used to calculate the sample size, and subjects’ weight, height and hepatic span where measured while the BMI was calculated and the data was analyzed using python programming language for data science. Results: The data obtained were subjected to descriptive statistics and the Pearson correlation coefficient. P value greater than or equal to 0.05 was taken as statistically significant. The respondents were mainly aged 30 to 63 years. Conclusion: The null hypothesis was rejected;hence this research has stated the law known as Belema’s Law of hepatic-height correlation, which states that the hepatic span of an individual is directly proportional to the height of that individual except in disease conditions affecting the liver directly or indirectly.

A dCAPS marker developed from a stress associated protein gene TaSAP7-B governing grain size and plant height in wheat

Stress associated proteins（SAPs） are the A20/AN1 zinc-finger proteins which confer to abiotic stresses in plants. In this study, TaSAP7-B, including two AN1 domains, was isolated from B genome of wheat（Triticum aestivum L.）. Sequencing analysis on TaSAP7-B illustrated one In Del（insertion-deletion） and one SNP（single nucleotide polymorphism） in the promoter region while no diversity was observed in the coding region. On the basis of SNP in the promoter region（–260 bp）, a dCAPS（derived cleaved amplified polymorphic sequences） marker SNP-260 was developed for TaSAP7-B. Using a natural population consisting of 262 wheat accessions, significant associations were detected between the marker SNP-260 and agronomic traits, such as plant height（PH）, peduncle length（PL）, length of penultimate internode（LPI）, number of spike per plant（NSP）, and 1 000-grain weight（TGW）. Two genotypes were identified using marker SNP-260 in the natural population. Among them, the genotypes possessing C allele exhibited a higher TGW and shorter PH than the T genotypes. Hence, base C was considered as the superior allele. The dCAPS marker of TaSAP7-B can be instrumental for marker-assisted selection for high grain size and short plant height.

氯酯磺草胺与甲咪唑烟酸复配防除香附子效果及对紫花苜蓿安全性

为明确氯酯磺草胺与甲咪唑烟酸应用于紫花苜蓿(Medicago sativa)田的可行性,在温室和田间测定了氯酯磺草胺和甲咪唑烟酸复配对香附子(Cyperus rotundus)的防效和紫花苜蓿的安全性。温室试验表明,氯酯磺草胺和甲咪唑烟酸复配对香附子具有很好的防除效果,两者按有效成分用量比1:2~1:4配比对香附子株高和鲜重的共毒系数分别介于131.54~150.46和152.84~180.25,呈明显增效作用,其中1:3的比例配伍的增效最为明显,对紫花苜蓿和香附子之间的株高和鲜重选择性指数分别为1.86和1.56。两地田间试验表明,氯酯磺草胺和甲咪唑烟酸(17.50+52.50)~(25.00+75.00) g·hm^(-2)复配处理对郑州和兰考两地的香附子株防效分别为78.5%~88.5%和82.1%~90.8%、鲜重防效分别为83.4%~92.7%和84.7%~93.6%,增产率分别为28.8%~35.1%和30.5%~38.3%,显著高于氯酯磺草胺和甲咪唑烟酸单用,且避免了单用氯酯磺草胺和甲咪唑烟酸的药害问题,提高了对紫花苜蓿的安全性,表明甲咪唑烟酸和氯酯磺草胺复配可有效防控香附子,对紫花苜蓿的安全性较好,具有良好推广应用前景。

Improved theory of projectile trajectory reference heights as characteristics of meteo-ballistic sensitivity functions

Projectile trajectories calculated under non-standard conditions are considered to be perturbed. The tools utilized for the analysis of perturbed trajectories are weighting factor functions(WFFs) which are a special kind of sensitivity functions. WFFs are used for calculation of meteo ballistic elements mB(ballistic wind wB, virtual temperature tB, pressure pB, density rB, speed of sound a) as well. An effect of weapon system parameters can be incorporated into calculations through the reference height of trajectory-RHT.RHT are also calculated from WFFs. Methods based on RHT are far more effective than traditional methods that use weighting factors q.We have found that the existing theory of RHT has several shortcomings due to we created an improved theory of generalized RHT which represent a special sensitivity parameters of dynamical systems. Using this theory will improve methods for designing firing tables, fire control systems algorithms, and meteo message generation algorithms.

中国2014—2020年7~12岁儿童生长趋势及超重肥胖状况分析

背景自改革开放以来,中国的社会经济快速发展,儿童的身高、体质量等基础指标快速上升。既往研究显示中国儿童的身高增长放缓,体质量的增长加速,导致了超重和肥胖的高患病率,调查当前中国儿童的生长发育与营养状况对于预防及应对生长趋势的消极影响十分重要。目的分析2014—2020年中国7~12岁儿童生长趋势和超重肥胖趋势,为制定儿童体质促进和肥胖预防措施提供科学依据。方法本研究于2022年5月选取中国家庭追踪调查(CFPS)2014年、2016年、2018年和2020年4次调查中10817名7~12岁儿童的身高、体质量和BMI数据,以性别和城乡分层,比较2014—2020年不同性别和城乡间身高、体质量、超重患病率、肥胖患病率和超重肥胖患病率的流行趋势,并采用Logistic回归分析探讨中国2014—2020年7~12岁儿童超重肥胖影响因素。结果2020年7~12岁城市女性儿童、乡村男性儿童、乡村女性儿童的身高相较于2014年增高了3.8 cm(95%CI=1.3~6.2 cm)、6.5 cm(95%CI=4.3~8.5 cm)、6.6 cm(95%CI=4.3~8.8 cm);2020年7~12岁城市男性儿童、城市女性儿童、乡村男性儿童、乡村女性儿童的体质量相较于2014年增高了2.3 kg(95%CI=0.8~3.9 kg)、2.1 kg(95%CI=0.6~3.7 kg)、3.0 kg(95%CI=1.7~4.2 kg)、3.0 kg(95%CI=1.8~4.2 kg),差异有统计学意义(P<0.05)。2014—2020年间,男性儿童的超重肥胖率从26.5%上升至29.5%,女性儿童的肥胖率和超重肥胖率分别从12.1%和21.1%下降至7.9%和17.3%,城市儿童的超重率和超重肥胖率分别从11.7%和21.6%上升至14.9%和26.4%,乡村儿童的肥胖率和超重肥胖率分别从14.3%和25.8%下降至11.2%和21.6%,差异均有统计学意义(P<0.05)。多因素Logistic回归分析结果显示,年龄和性别是儿童超重的影响因素(P<0.05);城乡、年龄和性别是儿童肥胖和超重肥胖的影响因素(P<0.05);年龄是男性儿童肥胖的影响因素(P<0.05);年龄和年份是男性儿童超重肥胖的影响因素(P<0.05);年龄是女性儿童超重的影响因素(P<0.05);城乡、年龄和年份是女性儿童肥胖和超重肥胖的影响因素(P<0.05)。结论2014—2020年间,中国7~12岁儿童身体形态快速增长,乡村增量大于城市,城乡差距缩小,同时男性和城市儿童超重肥胖患病率继续增加,女性和乡村儿童下降。城乡、年龄和性别是儿童超重肥胖患病率的影响因素。

黑龙江省大豆田苘麻田间发生动态

随着大豆种植面积逐年增加,黑龙江省大豆田苘麻的危害也显著加重。掌握苘麻在大豆田中的发生规律,抓住防除苘麻的关键时期,可以更好地制定科学有效的综合防除策略。本研究通过田间调查及数据统计分析初步分析了苘麻的田间发生动态。结果表明,拔除处理的苘麻种群数量达79.0株/m^(2),显著高于不拔除处理的苘麻累计出苗数18株/m^(2),且不拔除处理苘麻累计出苗数比其最高值33.8株/m^(2)减少了46.75%。5月下旬到9月初苘麻的株高及鲜重变化曲线呈S形,即表现“慢快慢”的基本规律。大豆播种后10~20 d为苘麻出苗高峰期,6月中旬到7月中旬为苘麻快速生长期,7月下旬苘麻进入开花结实期,8月中旬苘麻种子逐渐成熟,9月初苘麻种子大部分成熟。单株苘麻的生物量和结籽量随着出苗时间的推迟而降低。5月下旬到7月上旬出苗的苘麻均能开花结实完成整个生长繁殖过程,且出苗越早的苘麻开花期越长,苘麻蒴果的平均直径更大,单蒴果平均种子数更多,结实能力更强。7月中旬以后出苗的苘麻不能开花无生殖生长。

适于胎龄与小于胎龄的极低出生体重儿身长增长对PICC尖端移位的影响及比较

目的探讨极低出生体重儿(very low birth weight,VLBW)中适于胎龄儿(appropriate for gestational age,AGA)和小于胎龄儿(small for gestational age,SGA)身长增长对经外周中心静脉置管(peripherally inserted central catheter,PICC)尖端移位的影响,并横向比较影响程度,帮助医护人员更好地把握导管尖端位置监测的时机。方法回顾性分析2021年1月—2022年6月在医院NICU住院并使用PICC的VLBW,按出生体质量和胎龄关系分为AGA组45例和SGA组19例,记录首次置管当日身长(Ht_(1))以及PICC尖端位置、置管期间胸片检查当日身长(Ht_(n))以及PICC尖端位置,并计算相应的身长增长率。身长增长率与PICC尖端移位的相关性用Spearman秩相关分析。将AGA和SGA的身长增长率分别与PICC尖端移位进行简单线性回归分析,构建回归模型,用协方差分析比较两组回归直线。结果VLBW中AGA组97.8%患儿出现移位,SGA组所有的患儿都出现移位,占比最多的均为移位3个椎体。Spearman秩相关分析结果显示,两组患儿身长增长率与PICC尖端移位均具有相关性(AGA组rs=-0.719,P<0.001;SGA组rs=-0.769,P<0.001),随着VLBW身长增长,PICC尖端逐渐移位远离心脏。简单线性回归分析结果显示,AGA组回归模型(R^(2)=0.517,调整后R^(2)=0.513,F=129.487,P<0.001),SGA组回归模型(R^(2)=0.591,调整后R^(2)=0.585,F=95.385,P<0.001)。协方差分析结果显示,由于回归系数检验没有统计学意义,两条直线平行,说明身长增长率对两组患儿位移的影响一致。截距比较有统计学意义(F=9.265,P=0.003),说明两组患儿位移的起点不同(即增长率为零时的位移位置),说明位移与是否为AGA、SGA有关。结论随着VLBW中AGA和SGA身长增长,PICC尖端逐渐移位远离心脏,但相同的身长增长率,SGA引起的导管尖端移位幅度更大。建议AGA身长增长率12.4%、SGA身长增长率9.5%可作为监测导管尖端位置的重要时机,以免导管尖端进一步移位至非中心静脉,导致相关并发症发生。

基于LDA-RBF及综合赋权法的顶板突水危险性评价

为了解决龙凤煤矿9号煤层开采过程中顶板突水危险性问题,采用线性判别分析法(LDA)构建1种LDA-RBF神经网络导水裂隙带发育高度预测模型,并基于改进CRITIC评价法结合层次分析法(AHP)建立了CRITIC-AHP综合赋权法,分别评价矿区顶板采裂危险性及含水层富水性等级;通过ArcGis地理信息处理技术,将采裂危险性分区与富水性分区叠加,得到9号煤层顶板突水危险性综合分区图。结果表明:LDA-RBF神经网络预测模型结构简单且拟合精度更高,9号煤层导水裂隙带发育预测高度为50.4 m,已超过区域内大部分含水层底界标高,表明大部分区域存在较高的采裂危险性;而改进后的综合赋权法避免了评价结果主客观性过强的问题,其富水性分区结果与钻孔实际涌水量相符;突水危险区主要在矿区中北部呈条状分布,这是该区域含水层富水性较强和采裂危险性较高共同作用的结果,因此,在实际开采中应对以上区域予以重视。

小麦E3泛素连接酶基因TaSINA-3A与多种环境下的株高和千粒重相关

E3泛素连接酶SINA(seven in absentia)家族参与植物的生长发育、免疫共生并响应逆境胁迫。本研究克隆了位于小麦染色体3A上的TaSINA-3A基因,其基因组序列长度为3897 bp,其中启动子区为2001 bp,基因序列为1896 bp,编码244个氨基酸,在50~91位氨基酸处有一个RING(really interesting new gene)保守结构域。RT-qPCR结果显示,TaSINA-3A基因在小麦的各个发育阶段的不同组织中均有表达。序列多态性分析表明,在TaSINA-3A的启动子区存在33个SNP(single nucleotide polymorphism)位点,编码区有4个SNP位点。基于启动子区的变异位点SNP-159、SNP-418和SNP-1286开发分子标记,扫描小麦自然群体,并与表型性状进行关联分析。结果表明,标记CAPS-159与多种环境下的株高和倒二节长显著相关,SNP-159-C是倒二节较短的矮秆等位变异,标记dCAPS-418分别与多种环境下的穗长和千粒重显著关联,SNP-418-A是长穗、高千粒重的优异等位变异;TaSINA-3A负调控穗和籽粒的发育,TaSINA-3A的表达可能受到MYC转录因子的抑制;在我国小麦育种进程中SNP-418-A受到正向选择,在育成品种中的频率逐步增加,但尚未充分利用。研究结果为深入探讨小麦株高、倒二节长及产量的形成机制提供参考,并为培育高产稳产广适新品种提供了基因资源。

不同体位鼻饲喂养早产儿对生长发育的影响

目的:探讨早产儿应用不同体位鼻饲喂养对生长发育的影响。方法:选取2020年1月~2021年10月粤北人民医院195例早产儿作为本次研究对象,按照不同体位鼻饲喂养方式分为左侧卧位组以及右侧卧位组、俯卧位组,每组各65例,分别对三组早产儿实施左右卧位以及俯卧位,对三组早产儿生长发育情况进行详细记录。结果:俯卧位组头围增长以及身高增长、体重增长情况优于左侧卧位组与右侧卧位组,差异有统计学意义(P<0.05);俯卧位组腹胀次数、胃残奶次数、呕吐次数以及血氧下降次数(5.00%、5.00%、7.50%、5.00%)低于左侧卧位组(22.50%、25.00、27.50%、25.00%)与右侧卧位组(20.00%、20.00、22.50%、22.50%),差异有统计学意义(P<0.05);俯卧位组光疗时间及黄疸持续时间短于左侧卧位组与右侧卧位组,差异有统计学意义(P<0.05)。结论:早产儿采用俯卧位鼻饲喂养能够进一步促进身高增长、体重增长情况,缩短光疗时间及黄疸持续时间,避免腹胀、胃残奶、呕吐以及血氧下降等情况发生。

圆柱形PDC切削齿磨损对钻井工艺规程的影响

聚晶金刚石复合片(Polycrystalline Diamond Compact,PDC)钻头因其较高的耐磨性与钻井时效,在油气和地热的深部钻井中得到了广泛应用。PDC切削齿性能与切削齿磨损程度相关,直接影响钻头的寿命和钻进效率,所以研究切削齿的磨损对钻井工艺规程至关重要。针对切削齿在磨损阶段与岩石接触区域形状复杂、面积计算困难的问题,通过使用平面斜截复合片所在圆柱面的方法,推导出接触区域为部分椭圆,得到了接触面积与磨损高度、后倾角的函数表达式,分析了磨损高度、后倾角的变化对接触比压、片内剪应力的影响。结果表明:切削齿与岩石的接触面积受复合片磨损高度、后倾角大小的影响,磨损高度越大,后倾角越小,接触面积及面积变化率越大;相同载荷下的接触比压和片内剪应力随接触面积增大而越小。因此应根据复合片的磨损状态选择合适的钻井工艺参数,以维持PDC钻头的破岩效率。

屈光参差儿童双眼前节生物参数差异性分析

目的:分析屈光参差儿童双眼前节生物参数间的差异。方法:纳入235例6~15岁双眼屈光度相差≥1.00 D且双眼轴相差≥0.3 mm的儿童,分为双眼均近视(A组)、双眼均未近视(B组)和一眼近视一眼未近视(C组)。测量双眼前节生物学参数(角膜曲率、前房深度、晶体厚度)、屈光度、眼轴长度及体格发育指标(身高、体重、体重指数),分析屈光参差儿童双眼间眼前节生物学参数的差异,以及生物学参数与性别、体格发育指标的相关性。结果:每组儿童双眼间角膜曲率比较无统计学差异(均P>0.05),双眼间长眼轴眼前房深度大于短眼轴眼(均P<0.01)。A组和B组双眼间晶体厚度比较无统计学差异(P>0.05),而C组近视眼的晶体厚度薄于未近视眼(P<0.01)。双眼前节参数差异与性别及体格发育指标无相关性(均P>0.05)。结论:屈光参差儿童双眼角膜曲率无差异。长眼轴眼前房深于短眼轴者,已近视和未近视者晶体厚度双眼间比较无统计学差异,而一眼近视一眼未近视者近视眼晶体厚度薄于未近视眼,提示屈光参差患者在眼部发育过程中眼前节生物参数的变化可能存在不同的调控机制,且与性别及体格发育指标无相关性。

人性化护理干预应用于早产儿家庭病房中对患儿身长、体重、NBNA评分的影响

目的探讨在早产儿家庭病房中实施人性化护理干预对其身长、体重与早产儿神经行为(NBNA)评分的临床影响。方法本文的观察对象为80例在我院出生的早产儿,病例选取时间为2021年1月至2022年12月,病例分组方法为随机数字表法,分组后分别命名为对照组(40例)与观察组(40例),对照组在新生儿家庭病房中实施常规护理,观察组在新生儿家庭病房中实施人性化护理干预,对比两组护理前后的身长、体重、NBNA评分、父母应对能力及家属满意度。结果护理1个月后,在身长、体重以及家属对护理的满意度比较上,观察组均高于对照组(均P<0.05);护理1个月后,在早产儿神经行为量表(NBNA)的行为能力、原始反射、主动肌张力、被动肌张力、一般状态等5项评分的比较上,观察组均高于对照组(均P<0.05);护理1个月后,在父母应对能力的早产儿照护技能、早产儿保健知识、父母角色适应、家庭功能、亲子关系、外界支持、消极应对、积极应对等8项评分的比较上,观察组均高于对照组(均P<0.05)。结论在早产儿家庭病房中实施人性化护理干预不仅可以有效推动早产儿的生长发育,改善其神经发育行为,还可以提高其父母的应对能力,提升家属满意度。

杭州地区学龄前流动儿童体格发育不良的影响因素分析

目的 分析杭州地区学龄前流动儿童体格发育不良情况的相关影响因素。方法 选取杭州地区学龄前流动儿童229例,测量其身高与体重,评估其年龄别身高Z评分(HAZ)、年龄别体重Z评分(WAZ)。根据评估结果分为体格发育不良组与发育正常组,比较两组基本信息,采用logistic回归分析法分析体格发育不良的影响因素。结果 229例儿童中,体格发育不良50例(21.83%),包括生长发育迟缓22例(9.60%),体重低下28例(12.23%);发育不良组出生体重明显低于发育正常组(t=2.63,P<0.05),发育不良组母亲受教育水平初中及以下、母亲身高<150 cm、偏食、每天户外活动时间≤1 h占比明显高于发育正常组,差异均有统计学意义(χ~2分别=20.61、10.38、51.30、13.25,P均<0.05)。logistic回归分析显示,低出生体重、母亲受教育水平初中及以下、偏食、每天户外活动时间≤1 h为学龄前流动儿童体格发育不良的危险因素(OR分别=6.97、7.83、4.41、170.20,P均<0.05)。结论 杭州地区学龄前流动儿童体格发育不良的相关危险因素主要包括低出生体重、母亲受教育水平低、偏食、户外活动时间≤1 h/d等。