Fabrication of High Color Rendering Index White Light Emitting Diodes from Gold Nanoclusters

We demonstrated gold nanoclusters as color tunable emissive light converters for the application of white light emitting diodes (WLEDs). A blue LED providing 460 nm to excite gold nanoclusters mixed with UV curable material generates broad bandwidth emission at the visible range. Increasing the amount of gold nanoclusters, the correlated color temperature of WLEDs tuned from cold white to warm white, and also results in the variation of color rendering index (CRI). The highest CRI in the experiment is 92.

Very-High Color Rendering Index Hybrid White Organic Light-Emitting Diodes with Double Emitting Nanolayers

A very-high color rendering index white organic light-emitting diode(WOLED) based on a simple structure was successfully fabricated. The optimized device exhibits a maximum total efficiency of 13.1 and 5.4 lm/W at 1,000 cd/m2. A peak color rendering index of 90 and a relatively stable color during a wide range of luminance were obtained. In addition, it was demonstrated that the 4,40,400-tri(9-carbazoyl) triphenylamine host influenced strongly the performance of this WOLED.These results may be beneficial to the design of both material and device architecture for high-performance WOLED.

Analysis of Physiological and Biochemical Indexes of White Suffolk Sheep,White-tibetan Sheep and Tibetan Sheep

In order to compare the physiological and biochemical indexes of different sheep populations in plateau area,we measured the physiological and biochemical indexes of White Suffolk sheep,White-tibetan sheep and Tibetan sheep in four seasons.The body temperature,respiration and heart rate of White Suffolk sheep,White-tibetan sheep and Tibetan sheep throughout the year were（38.96±0.23）-（40.80±0.74）℃,（27.20±7.73）-（74.56±10.91）times/min,and（83.10±2.42）-（106.25±7.07）times/min,respectively.The main blood physiological indexes of White-tibetan sheep were between those of Suffolk sheep and Tibetan sheep or close to that of Tibetan sheep,the indexes of WBC in summer,HGB and RDW-CV in autumn,RDW-CV in winter were close to that of White Suffolk sheep.The main blood biochemical indexes of White-tibetan sheep were between that of White Suffolk sheep and Tibetan sheep or close to that of Tibetan sheep,but the indexes of ALB in spring,AST in summer,ALP and CHOL in autumn,and ALP in winter were close to that of White Suffolk sheep.It revealed that the adaptability of White-tibetan sheep was prior to White Suffolk sheep,and tended to Tibetan sheep in the plateau environment.

Analysis of Physiological and Biochemical Indexes of White-tibetan Sheep at Different Months of Age

To study the physiological and biochemical indexes of White-tibetan sheep in plateau environment, we measured the physiological and biochemical inde- xes of White-tibetan sheep at 3, 6, 9, 12, 15, 18,21 and 24 months of age. The results showed that the body temperature, respiration and heart rate of White-ti- betan sheep at 3 - 24 months of age were （38.89 ±0. 56） - （39.83 ± 0.32） ℃, （26.00±6.67 ） - （58.64 ± 12.67 ） times/rain and （ 83.90 ± 7.64） - （111.36 ±7.46） times/rain, respectively. The blood physiological indexes of WBC, HCT and RDW-CV at 3, 6, 15 and 18 months of age were lower than those at 9, 12, 21 and 24 months of age. On the contrary, the indexes of RBC, MCV, MCH and MCHC at 3, 6, 15 and 18 months of age were higher than those at 9, 12, 21 and24 months of age, while HGB and PLT did not vary with months of age. For blood biochemical indexes, ALT, AST, TP, ALB, LDH and CHOL reached the maximums at 21 months of age, while ALP, PCHE and GLU reached the maximums at 3 months of age. Besides, the GLO and GA reached the maxi- mums at 18 and 24 months of age, respectively. The physiological and biochemical indexes of White-tibetan sheep followed certain rules in growth and development process, and might be affected by plateau climate and season.

High color rendering index white organic light-emitting diode using levofloxacin as blue emitter

Levofloxacin （LOFX）, which is well-known as an antibiotic medicament, was shown to be useful as a 452-nm blue emitter for white organic light-emitting diodes （OLEDs）. In this paper, the fabricated white OLED contains a 452-nm blue emitting layer （thickness of 30 nm） with 1 wt% LOFX doped in CBP （4,4＇-bis（carbazol-9-yl）biphenyl） host and a 584-nm orange emitting layer （thickness of 10 nm） with 0.8 wt% DCJTB （4-（dicyanomethylene）-2-tert-butyl-6-（1,1,7,7- tetramethyljulolidin-4-yl-vinyl）-4H-pyran） doped in CBE which are separated by a 20-nm-thick buffer layer of TPBi （2,2＇,2＂-（benzene-1,3,5-triyl）-tri（1-phenyl-lH-benzimidazole）. A high color rendering index （CRI） of 84.5 and CIE chromaticity coordinates of （0.33, 0.32）, which is close to ideal white emission CIE （0.333, 0.333）, are obtained at a bias voltage of 14 V. Taking into account that LOFX is less expensive and the synthesis and purification technologies of LOFX are mature, these results indicate that blue fluorescence emitting LOFX is useful for applications to white OLEDs although the maximum current efficiency and luminance are not high. The present paper is expected to become a milestone to using medical drug materials for OLEDs.

双金花茶改善免疫低下小鼠免疫功能的实验研究

目的研究双金花茶对免疫低下小鼠免疫功能的影响,促进该药临床应用和产业发展。方法将120只小鼠分为双金花茶高剂量组(4 g/kg)、双金花茶中剂量组(2 g/kg)、双金花茶低剂量组(1 g/kg)、阳性组(归芪补血口服液2.0 g/kg)、模型组、空白组,每组20只。除空白组外,其他各组给予腹腔注射环磷酰胺。观察6组小鼠给药前后的精神状态、毛发、活动、饮食、二便量情况。比较6组小鼠给药后的红细胞(RBC)、血红蛋白(HGB)、红细胞压积(HCT)、网织红细胞百分比(Ret)、血小板(PLT)、白细胞(WBC)、体重、胸腺与脾脏的重量及脏器指数。通过NK细胞活性实验、碳廓清实验,观察双金花茶对小鼠自然杀伤细胞活性和吞噬细胞吞噬能力的影响。结果给药干预14 d后,双金花茶各剂量组和阳性组小鼠活跃度增加,饮食、便尿量和体力有一定的恢复。模型组小鼠血象WBC、Ret、RBC、HGB、HCT、PLT、NK细胞活性均明显低于空白组(P<0.05、P<0.01)。双金花茶高中剂量组、阳性组小鼠血象WBC、Ret、RBC、HGB、HCT、PLT均高于模型组,但差异均无统计学意义(均P>0.05)。双金花茶各剂量组与阳性组NK细胞活性明显高于模型组(P<0.01)。模型组体重、胸腺重、脾重均明显低于空白组(P<0.05)。双金花茶高剂量组、阳性组小鼠体重和脾重明显高于模型组(P<0.05)。双金花茶各剂量组、阳性组小鼠胸腺重量明显高于模型组(P<0.05)。模型组的吞噬指数和廓清指数明显低于空白组(P<0.01)。双金花茶高剂量组、阳性组廓清指数和吞噬指数明显高于模型组(P<0.01)。双金花茶中剂量组廓清指数明显高于模型组(P<0.05)。结论双金花茶可改善免疫低下实验小鼠的免疫功能,为双金花茶的临床应用以及产业发展提供有利参考依据。

饲养密度对笼养白羽肉鸡生长性能、羽毛评分、血清生化和免疫指标的影响

试验旨在探究不同饲养密度对笼养白羽肉鸡生长性能、羽毛评分、血清生化和免疫指标的影响。试验选取504只体重相近、健康状况良好的1日龄科宝白羽肉鸡母雏,随机分为3组,每组8个重复(笼)。7~14日龄3组饲养密度分别为16只/m^(2)、17只/m^(2)、18只/m^(2),15~39日龄3组饲养密度为13只/m^(2)、14只/m^(2)、15只/m^(2)。结果显示:(1)不同饲养密度对7~14日龄和15~28日龄肉鸡平均采食量和料重比产生显著影响(P<0.05),且15~28日龄时,14只/m^(2)组平均日增重显著高于13只/m^(2)组(P<0.05),13只/m^(2)组料重比显著高于15只/m^(2)组(P<0.05)。29~39日龄13只/m^(2)组和14只/m^(2)组平均日增重显著高于15只/m^(2)(P<0.05);(2)不同饲养密度对肉鸡14日龄主翼羽长度产生显著影响(P<0.05);(3)不同饲养密度对肉鸡14日龄和39日龄羽毛评分产生显著影响(P<0.05);(4)不同饲养密度对肉鸡血清中碱性磷酸酶(ALP)活力、三碘甲状腺原氨酸(T3)和甲状腺素(T4)的含量产生显著影响(P<0.05),17只/m^(2)组显著高于16只/m^(2)组和18只/m^(2)组(P<0.05),14只/m^(2)组显著高于13只/m^(2)组和15只/m^(2)组(P<0.05);(5)不同饲养密度对肉鸡14日龄和39日龄血清中白细胞介素-4(IL-4)、白细胞介素-6(IL-6)、白细胞介素-10(IL-10)和白细胞介素-1β(IL-1β)含量产生显著影响(P<0.05)。研究表明,笼养科宝白羽肉鸡7~14日龄适宜饲养密度为17只/m^(2),15~39日龄适宜饲养密度为14只/m^(2)。

平衡赖氨酸和蛋氨酸的低蛋白日粮对育雏期皖西白鹅血液生化和胸腺结构的影响

目的:探究平衡赖氨酸和蛋氨酸的低蛋白日粮对育雏期皖西白鹅血液免疫指标和胸腺结构的影响。方法:选用180只1日龄皖西白鹅作为研究对象,随机分为6组,每组30只;试验采用3×2因子设计(不同蛋白水平:20%、18%、16%,分别平衡赖氨酸、蛋氨酸),于14和28日龄分别采集血液和胸腺,研究不同氨基酸平衡模式及蛋白水平对育雏期皖西白鹅血液免疫指标以及胸腺结构的影响。结果:14日龄时,D组MCV、MCH显著高于E、F组(P<0.05);F组血清TP、ALB、AST含量显著高于D、E组(P<0.05),D组UA极显著高于F组(P<0.01);A组TG含量显著高于B、C组(P<0.05);28日龄时低蛋白组ALP显著高于高蛋白组。14与28日龄各组胸腺器官指数无显著差异(P>0.05);结构变化不明显(P>0.05)。结论:低蛋白日粮平衡氨基酸可以提高育雏期皖西白鹅的蛋白质利用率,降低尿酸沉积,且对胸腺发育没有负面影响。

增深剂对面料防紫外线性能的影响

文章根据低折射率树脂增深剂能减少纱线及面料表面反射光的特性,研究了增深剂种类、后整理工艺、面料规格对面料防紫外线性能的影响。结果表明:在不降低白度的情况下,添加增深剂有助于提升白色面料的防紫外线性能;增深剂种类不同,对面料防紫外线性能的提升程度不同,酯类增深剂对防紫外线性能的提升优于硅类增深剂;相比丝光和液氨整理后加入增深剂,退浆后加入增深剂对面料防紫外线性能的提升更大;焙烘加工不利于增深剂对面料防紫外线性能的提升;增深剂对不同规格面料防紫外线性能的提升程度不同,对斜纹面料的提升优于平纹面料。

NaYSiO_(4)∶Ce^(3+)蓝色荧光粉的发光性质及其在白光发光二极管上的应用

采用高温固相法合成了NaYSiO_(4)∶xCe^(3+)(0.01≤x≤0.05)系列蓝色荧光粉。NaYSiO_(4)∶xCe^(3+)荧光粉在250~360 nm之间的宽带吸收能与紫外LED芯片很好地匹配。NaYSiO_(4)∶xCe^(3+)荧光粉中存在多个Ce^(3+)离子荧光中心,且在紫外光激发下表现出峰值波长位于414 nm附近的宽带蓝光发射。NaYSiO_(4)∶0.02Ce^(3+)荧光粉在300~350 nm紫外光激发下量子效率在25%以上。NaYSiO_(4)∶0.02Ce^(3+)荧光粉表现出优良的化学稳定性,在水中浸泡14 d后荧光强度和量子效率几乎不变。将NaYSiO_(4)∶0.02Ce^(3+)蓝色荧光粉、商用(Sr,Ba)_2SiO_(4)∶Eu^(2+)绿色荧光粉和商用(Ca,Sr)AlSiN_(3)∶Eu^(2+)红色荧光粉涂覆于310 nm紫外LED芯片上制备得到了显色指数高达95的LED器件。当驱动电流从50 mA逐渐增大到300 mA时,制备的LED器件表现出稳定的暖白光发射,其色坐标几乎不变。上述结果说明,本研究报道的NaYSiO_(4)∶0.02Ce^(3+)蓝色荧光粉在紫外LED芯片驱动的白光发光二极管照明上有着潜在应用价值。

即刻种植与位点保存种植在上前牙微创拔牙术后种植的效果比较

目的探讨比较即刻种植与位点保存种植治疗对上前牙微创拔牙患者红白美学效果的影响术后种植效果。方法回顾性分析2021年1月至2023年7月我院收治的上前牙微创拔牙患者64例,按收治时间先后分为2组,各32例。对照组微创拔牙后行位点保存种植,观察组微创拔牙后行即刻种植。比较两组红白美学效果[红色美学指数评分(PES)、白色美学指数(WES)]评分、牙槽骨相关指标及满意度。结果治疗后6个月,观察组PES评分(13.53±0.21)分及WES评分(9.75±0.11)分均高于对照组的(11.86±0.16)分、(8.69±0.05)分,差异有统计学意义(P<0.05);观察组牙槽骨高度(14.66±1.32)mm、牙槽骨宽度(6.87±0.83)mm及牙槽骨密度(1.67±0.11)g/cm^(2)分别高于对照组的(12.54±1.41)mm、(5.71±0.76)mm、(1.33±0.24)g/cm^(2),差异有统计学意义(P<0.05);观察组满意度高于对照组,差异有统计学意义(P<0.05)。结论上前牙微创拔牙患者采用即刻种植治疗相较于位点保存种植治疗,效果更佳,可有效提升红白美学效果,并改善牙槽骨相关指标,提升满意度,值得推广。

中性粒细胞CD64指数对新生儿吸入性肺炎的诊断价值

目的探讨中性粒细胞CD64(nCD64)指数在新生儿吸入性肺炎诊断中的价值。方法选取2021年7月到2022年7月在桂林市人民医院生产过程中吸入胎粪或羊水的105例新生儿为研究对象,根据临床诊断结果分为吸入性肺炎85例(感染组)和未发生吸入性肺炎20例(对照组)。检测两组新生儿的白细胞计数(WBC)、中性粒细胞百分比(N%)、超敏C反应蛋白(hs-CRP)水平,并计算nCD64指数。绘制受试者工作特征(ROC)曲线分析nCD64指数、WBC、N%、hs-CRP对新生儿吸入性肺炎诊断的效能。结果感染组nCD64指数、WBC、N%均高于对照组,差异均有统计学意义(P<0.05);感染组hs-CRP水平高于对照组,但差异无统计学意义(P>0.05)。ROC曲线分析结果显示,nCD64指数单独诊断新生儿吸入性肺炎的曲线下面积(AUC)为0.882(95%CI:0.802~0.961),灵敏度、特异度分别为88.2%、75.0%;N%诊断的AUC为0.672(95%CI:0.537~0.806),灵敏度、特异度分别为83.5%、60.0%;WBC诊断的AUC为0.650(95%CI:0.516~0.783),灵敏度、特异度分别为57.6%、75.0%。结论nCD64指数在新生儿吸入性肺炎感染的诊断中具有较高价值,值得临床推广。

低GI休闲即食土豆泥的研制

以土豆全粉、白芸豆α-淀粉酶、谷朊粉为原料,通过单因素试验和正交试验设计产品配方,通过正交试验的结果进行体外低GI测试,研制出一款低GI即食土豆泥。结果表明,土豆全粉最佳粒度为120目,复水性能和黏度良好,最佳配方为白芸豆α-淀粉酶3%,谷朊粉添加量2%,土豆全粉添加量15%,食盐添加量2%。此配方下的土豆泥口感良好、结块较少、质地均匀、营养价值高,低GI值为47.63,属于低GI食品。

Regulating Charge and Exciton Distribution in High-Performance Hybrid White Organic Light-Emitting Diodes with n-Type Interlayer Switch

The interlayer(IL) plays a vital role in hybrid white organic light-emitting diodes(WOLEDs); however,only a negligible amount of attention has been given to n-type ILs. Herein, the n-type IL, for the first time,has been demonstrated to achieve a high efficiency, high color rendering index(CRI), and low voltage trade-off.The device exhibits a maximum total efficiency of 41.5 lm W^(-1), the highest among hybrid WOLEDs with n-type ILs. In addition, high CRIs(80–88) at practical luminances(C1000 cd m^(-2)) have been obtained, satisfying the demand for indoor lighting. Remarkably, a CRI of 88 is the highest among hybrid WOLEDs. Moreover, the device exhibits low voltages, with a turn-on voltage of only 2.5 V([1 cd m^(-2)), which is the lowest among hybrid WOLEDs. The intrinsic working mechanism of the device has also been explored; in particular, the role of n-type ILs in regulating the distribution of charges and excitons has been unveiled. The findings demonstrate that the introduction of n-type ILs is effective in developing high-performance hybrid WOLEDs.

基于数字化手术导板引导下前牙美学区种植修复效果分析

目的:探讨基于数字化手术导板引导下前牙美学区种植修复效果。方法:选取2018年1月-2020年1月收治于笔者医院需行上前牙美学区种植修复的患者共60例作为研究对象,随机分为对照组(n=30)和观察组(n=30)。对照组予以常规种植修复(共55个种植体),观察组在数字化手术导板引导下予以种植修复(共62个种植体),两组患者均随访1年。比较两组种植体植入位置的偏差,包括颈部与根尖部距离、深度和角度;观察两组术后修复疗效;采用红白美学指数[红色美学指数(Redaestheticindex,PES)和白色美学指数(Whiteaestheticindex,WES)]评估两组术后1周、6个月及1年的美学效果,并比较两组修复满意度。结果:60例患者共117个种植体均成功完成种植,修复良好。观察组种植体植入位置偏差距离均小于对照组(P<0.05)。观察组术后1周、6个月及1年的PES、WES指数均高于对照组(P<0.05)。观察组修复满意度显著高于对照组(P<0.05)。结论:基于数字化手术导板引导下前牙美学区种植修复可有效提高种植体植入位置的准确性,减少定位误差,保证前牙美学区的修复效果。

HIV感染与脑白质高信号的相关性及危险因素分析

目的 探讨HIV感染对脑白质高信号(WMH)的影响及危险因素。方法 收集2016年1月至2023年12月确诊为HIV感染并行颅脑磁共振(MRI)检查的患者266例为观察组;并收集行MRI检查非HIV感染者282例为对照组,比较两组WMH发生情况、一般资料及各项指标。结果 观察组WMH发病率高于对照组(P<0.05);通过单因素分析发现,HIV阳性患者发生WMH的年龄、中性粒细胞百分比、淋巴细胞百分比、全身免疫炎症指数(SII)均高于无WMH患者(P<0.05);Logistic回归分析结果显示,年龄、中性粒细胞百分比、淋巴细胞百分比、SII是HIV感染者发生WMH的独立危险因素(P<0.05)。结论 HIV感染者可能更容易发生WMH,年龄、中性粒细胞百分比、淋巴细胞百分比、SII是影响HIV感染者发生WMH的危险因素。

Glycemic Index of Sugars Extracted from Immature Coconut Water: Case of Coconut Palms (<i>Cocos nucifera</i>L.) WAT, MYD and PB121⁺

In order to do a best stipulation on her consumption, it is necessary to know if a food provoke faintly, fairly or highly the glyceamia. The aim of this work was to evaluate the glycemic index of coconut water sugar from three coconuts varieties. So, with a cohort of 15 people, a capillary blood was collect after sugar ingestion and the glycaemia read directly on a glucometer. The result showed that the brown and white sugar from coconut sugar can be classified as low glycemic index food. Also, the glycemic indexes of white coconut water sugar are 2 to 3 more lower than that the brown sugar. The glycemic indexes of sugars vary according to the variety of coconut used. The sugars of the coconut palm (MYD) are more hyper-glycemic than those of the hybrid (PB121+) which is more hyperglycemic than the sugars of the coconut palm (WAT). Thus, with a controlled consumption, the coconut water sugars could be the sugars that are best for the health of the healthy and diabetic populations because it raises slightly the postprandial glucose.

Phosphor-free white light-emitting diodes

The multiple color-matching schemes that could improve the color rendering index for phosphor-free white LEDs are discussed. Then we review a few of the recent research directions for phosphor-free white LEDs, which include the development of monolithic GaN-based white LEDs and hybrid integrated GaN-based and A1GalnP-based white LEDs. These development paths will pave the way toward commercial application of phosphor-free white LEDs in the coming years.

Color-converted remote phosphor prototype of a multiwavelength excitable borosilicate glass for white light-emitting diodes

We report a unique red light-emitting Eu-doped borosilicate glass to convert color for warm white light-emitting diodes. This glass can be excited from 394 nm-peaked near ultraviolet light, 466 nm-peaked blue light, to 534 nm- peaked green light to emit the desired red light with an excellent transmission in the wavelength range of 400-700 nm which makes this glass suitable for color conversion without a great cost of luminous power loss. In particular, when assembling this glass for commercial white light-emitting diodes, the tested results show that the color rendering index is improved to 84 with a loss of luminous power by 12 percent at average, making this variety of glass promising for inorganic ＂remote-phosphor＂ color conversion.

饲养密度对新西兰白兔生长性能、行为、免疫器官指数和血清抗氧化指标的影响

试验旨在探讨饲养密度对家兔生长性能、行为方式、免疫器官指数和血清抗氧化指标的影响。试验选取35日龄体重相近(943.86±51.13)g,健康的雄性新西兰白兔120只,随机分为4组,每组6个重复(笼),即Ⅰ组每个重复(笼)2只(5只/m^(2))、Ⅱ组每个重复(笼)4只(10只/m^(2))、Ⅲ组每个重复(笼)6只(15只/m^(2))、Ⅳ组每个重复(笼)8只(20只/m^(2))。预饲期5 d,试验期35 d。结果显示:在生长性能方面,Ⅰ组和Ⅱ组家兔的末重和平均日增重显著高于Ⅲ组(P<0.05),且极显著高于Ⅳ组(P<0.01),Ⅲ组的末重和平均日增重显著高于Ⅳ组(P<0.05);平均日采食量Ⅰ组和Ⅱ组极显著高于Ⅲ组(P<0.01),Ⅲ组高于Ⅳ组(P<0.01)。在趴卧行为发生率方面,家兔的趴卧行为Ⅰ组和Ⅱ组极显著低于Ⅲ组(P<0.01),Ⅲ组极显著低于Ⅳ组(P<0.01);Ⅰ组和Ⅱ组的运动和站立行为发生率差异均不显著(P>0.05),其余各组之间差异均极显著(P<0.01);Ⅰ组和Ⅱ组的采食行为发生率均极显著高于Ⅲ组和Ⅳ组(P<0.01);Ⅰ组和Ⅱ组的修饰行为发生率极显著高于Ⅲ组和Ⅳ组(P<0.01),而啃咬行为发生率则显著低于Ⅲ组和Ⅳ组(P<0.05)。在免疫器官指数方面,Ⅰ组和Ⅱ组家兔的脾脏指数显著高于Ⅳ组(P<0.05),胸腺指数均显著高于Ⅲ组和Ⅳ组(P<0.05)。在血清抗氧化能力方面,Ⅱ组和Ⅲ组家兔的血清T-AOC浓度和SOD活性均显著高于Ⅳ组(P<0.05);Ⅰ组、Ⅱ组和Ⅲ组血清中MDA含量均显著低于Ⅳ组(P<0.05)。以上结果表明,适当降低饲养密度能够改善家兔的生长性能和行为状态,提高其免疫和抗氧化能力,在考虑饲养笼具利用率的基础上,以Ⅱ组4只/笼(10只/m^(2))的饲养密度效果最佳。