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高比例风光新能源地区日益增长的新能源装机带来新能源消纳压力巨大。电力现货市场能够通过分时价格信号，实时反映电力供需情况，引导用户负荷移峰填谷，提升新能源消纳水平。甘肃省作为中国首批现货试点省份之一，在起步阶段设计了考虑新能源参与的发电侧单边现货市场方案，但由于现货价格现阶段无法传导至用户侧，导致用户侧难以根据现货市场形成的价格信号调整用电需求，一定程度上制约了新能源消纳的市场潜力。文章着眼于改进甘肃现有的现货市场机制，在分析甘肃省新能源市场化消纳现状基础上，重点提出发电侧和用户侧双边参与的现货交易机制，包括组织方式、出清机制、结算机制等。通过算例对单边模式和双边模式下现货市场出清结果进行对比分析，结果表明，用户侧参与现货市场交易有利于激励用户主动消纳新能源，形成对新能源消纳友好的用电曲线，提高新能源消纳能力，为完善高比例新能源地区现货市场机制提供参考。

在5G前传网络中,单纤双向是重要的特征之一,相比4G和光纤接入（FTTx）网络中的单纤双向,5G前传网络中的单纤双向更为复杂。文章分析了在5G前传网络中实现单纤双向的情况及实现单纤双向关键光器件的原理,并分析了单纤双向系统的串扰源问题。分析结果表明,基于单只密集波分复用（DWDM）器件的DWDM单纤双向方案比基于光环行形器的DWDM单纤双向方案更有优势。

针对ZigBee无线传感器网络在移动过程中严重丢包和能量受限问题,通过分析簇算法、簇树（ClusterTree）与AODVjr混合算法,设计了一种基于ClusterTree+AODVjr协议的混合动态成簇路由算法。该算法采用动态成簇机制,能够使节点移动后及时响应拓扑变化,快速重建网络连接,减少丢包现象,提高网络有效分组递交率;同时利用减少RREQ（路由请求分组）的洪泛广播来降低能耗。利用网络仿真器NS2进行了仿真实验,结果表明与原ClusterTree+AODVjr算法相比,该改进算法可平均降低14%的能耗,提高8%的平均有效分组递交率。

文章基于半导体激光器速率方程,采用小信号分析模型获得了光外注入激光光源的调制特性表达式;根据调制特性表达式编写了仿真软件Optiwave System的Matlab元件,然后将其作为外注入光源应用到直接调制的多通道传输仿真模型中,用于评估光外注入方法对RoF（光载无线电）通信系统的多通道传输性能的影响。仿真结果表明,光外注入方法有利于减小互调失真的干扰,相对于无外注入的情况,系统传输性能有所改善,且对突破激光器驰豫振荡频率以上的多通道微波信号有更明显的作用。

ATM是面向连接的技术，实现组播通信／广播通信是ATM交换机优越于现有STM交换机的重大体现，也是ATM技术能否在现有网络基础上普遍应用的关键。在共享缓存型ATM交换机中，组播通信的实现是一项重点和难点，本文介绍我院研制的共享缓存型ATM交换机中组播通信的设计与实现方法。

通过模拟计算研究了二维三角形光子晶体波导自成像多模干涉的耦合特性,提出了一种二维光子晶体1×2分束器。基于自成像多模干涉效应,用有限时域差分法对这种分束器的特性进行了数值计算和分析。研究发现,这种分束器的透射率可高达96%,造成这种现象的物理原因是多模干涉区的自成像效应,这种多模干涉在光子晶体光学集成电路中具有重大的潜在应用价值。

采用仿真方法研究在光纤传输过程中产生并分发超宽带脉冲信号。对系统频响特性的数值分析获知频率响应在低频段表现出带通滤波器特性,且中心波长越短,低频带宽越大。仿真12.5 Gbit/s伪随机序列传输特性表明,高斯脉冲通过系统后,时域上脉冲信号接近于FCC（美国联邦通信认证）的超宽带脉冲波形模板,频域上的信号频谱接近于FCC的频谱规范。

光突发交换（OBS）被认为是下一代光纤通信网络的典型代表。文章研究了在OBS核心节点中突发数据包由于竞争相同的输出数据信道而发生的冲突问题,对冲突时的网络性能进行了分析,得出了在不同网络负荷情况下的包丢失率情况,研究结果对OBS网络的实际建设有一定的理论指导意义。

【目的】利用聚合酶链反应(PC R)技术对Wilson 病(WD)基因进行体外定点突变的研究。【方法】采用PCR 定点 突变技术, 首先设计两对引物, 将突变位点设计在引物上, 通过重叠延伸法两次PCR 扩增, 扩增片段上含有所需要的突变位 点, 最后将扩增片段克隆入pRc/ CMV 载体中。【结果】DNA 测序表明在预期位点已经发生突变,WD 基因第778 位密码子由 精氨酸(Arg)残基突变为亮氨酸残基(Leu), 用PCR 定点突变技术成功构建Wilso n 病基因突变体。【结论】PCR 技术诱导定点 突变准确、高效。Wilson 病基因突变体的构建成功, 为进一步研究该突变位点导致Wilson 病的发病机制和Wilson 病蛋白的结 构和功能的关系奠定了基础。

【目的】探讨地塞米松的用药方式对孕妇糖代谢的影响。【方法】对1999 年9 月至2001 年1 月在本院住院的 150 名不同用药方式使用地塞米松促胎儿肺成熟的孕妇进行研究, 在用药前及用药后18 ～ 24 h 抽取肘前静脉血查空腹血糖、 血浆C 肽, 糖负荷后2 h 血糖、血浆C 肽。【结果】使用地塞米松后, 空腹血糖值、糖负荷后2 h 血糖值、空腹C 肽及糖负荷后2 h C 肽值较用药前高;用药方式对母体空腹血糖值和空腹C 肽值的影响差异无统计学意义(P >0.05), 对母体糖负荷后2 h 血糖值和糖负荷后2 h C 肽值的影响差异有统计学意义(P

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Objective To establish and validate a model for predicting preeclampsia with nephrotic syndrome, providing reference for obstetricians to identify and diagnose preeclampsia with nephrotic syndrome early. Methods A retrospective analysis was conducted on 60 cases of pre-eclampsia with nephrotic syndrome hospitalized for delivery from January 2012 to January 2021 at the First Affiliated Hospital of Guangxi Medical University and Wuming Hospital affiliated to Guangxi Medical University. Additionally, 202 cases of non preeclampsia with nephrotic syndrome patients during the same period were selected as the control group. The cases were randomly divided into a training set and a validation set at a ratio of 7:3. Logistic univariate and multivariate analyses were performed on the training set according to whether preeclampsia with nephrotic syndrome was clinically diagnosed to establish a prediction model. The discriminative ability and calibration of the model were tested, and internal validation was conducted using bootstrap and validation set data. The model was visualized using a column line chart. Results Logistic univariate and multivariate analysis ultimately retained 4 variables: early onset type, primiparity, total protein, and fibrinogen. A diagnostic prediction model was established and presented using a column line chart. The internal validation area under the ROC curve was 0. 951 7, indicating good generalization of the model. The HL test statistic for internal validation was 5 376. 1, with P <0.001. Conclusion The constructed prediction model can serve as a reference for clinical physicians to diagnose preeclampsia with nephrotic syndrome. [ABSTRACT FROM AUTHOR]

Objective To investigate the effect of ursodeoxycholic acid (UDCA) on the symptoms after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in patients with primary biliary cholangitis (PBC) and their family member. Methods A questionnaire survey was conducted to collect related information from 171 PBC patients who attended The First Affiliated Hospital of Air Force Medical University before March 22, 2023 and 128 family members, including demographic information, comorbidities, UDCA administration, SARS-CoV-2 infection, vaccination, symptoms, therapeutic medication, and the changes in liver disease-related symptoms. The independent-samples / test or the Mann-Whitney U test was used for comparison of continuous data between two groups, and the chi-square test or the Fisher's exact test was used for comparison of categorical data between two groups. Results The median age was 51 years in the PBC patients and 49 years in the family members, with no significant difference between the two groups (P>0.05). Compared with the family member group, the PBC group had significantly lower body mass index (22.2±2.4 kg/m² vs 23.3-2.9 kg/m², P<0.001) and proportion of male individuals (10% vs 55%. P<0.001). All PBC patients received UDCA at a dose of 13-15 mg/kg, and SARS-CoV-2 infection rate was 100% in both groups. The family members had a significantly higher SARS-CoV-2 Vaccination rate than the PBC patients (91% vs 57%, P<0.001). Compared with the family members, the PBC patients had significantly milder symptoms of sneezing, nasal obstruction, chest pain, and abnormal taste (P<0.05). Compared with the family members, the PBC patients had significantly lower rates of use of compound cold medicine (11% vs 20%, P<0.05) and Lianhua Qingwen capsules (12% vs 21%, P<0.05). For the PBC patients after SARS-CoV-2 infection, the liver disease-related symptoms such as fatigue, abdominal distension, dry mouth and dry eyes, pruritus, and yellow skin were aggravated by 37%, 2%, 27%, 10%, and 3%, respectively. Conclusion Compared with the immediate family members of PBC patients who do not take UDCA, the PBC patients receiving UDCA do not show a reduction in SARS-CoV-2 infection rate, but UDCA may have a certain effect on alleviating infection-related symptoms in such patients. PBC patients may still experience the aggravation of liver disease-related symptoms after SARS-CoV-2 infection, and the long-term effect on PBC patients after SARS-CoV-2 infection should be taken seriously in clinical practice. [ABSTRACT FROM AUTHOR]

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首先论述了ＳＤＨ光通道代价产生的原因及对系统的影响，然后介绍ＳＤＨ系统光通道代价的测试方法，并分析了测试光纤长度的取值问题

会议电视系统中核心部分是比特率的控制方法，它对编码的图象质量产生直接影响。文中从缓冲器平滑波动数码流的原理入手，分析了缓冲器纯占有率控制算法及参数设置，并针对缓冲器纯占有率控制算法的编码图象质量不够理想的机理，研究了缓冲器占有率的视觉调整算法和基于比特分配的缓冲容量控制算法，并对三种算法进行了比较和论证

阐述ＳＤＨ设备中的激光器消光比对设备性能的影响，介绍消光比的两种测量技术，并分析了影响测量精度的误差源。

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[Objective] The study aimed to investigate the effects of powdery mildew stress on gene expression and chromatin accessibility in hulless barley, and to elucidate the molecular mechanisms underlying hulless barley's response to this stress. [Method] Two hulless barley varieties, GND7 (powdery mildew-resistant) and ZQ13 (powdery mildew-sensitive), were exposed to powdery mildew infection and a control treatment (using water instead of infection). Leaf samples were then collected for transcriptome and chromatin accessibility sequencing to identify differentially expressed genes and differentially accessible regions. [Result] In ZQ13, 1647 differentially expressed genes were found, comprising 980 upregulated and 667 downregulated genes during infection. Chromatin accessibility analysis revealed 7310 differentially accessible regions, with 424 regions showing increased accessibility and 6886 regions showing decreased accessibility after infection. In GND7, 1119 differentially expressed genes were identified, with 657 upregulated expression and 462 downregulated expression. Chromatin accessibility analysis indicated 2573 differentially accessible regions, with 1343 regions showing increased and 1230 regions showing decreased accessibility post-infection. Key genes, such as the AP2/ERF transcription factor (HOVUSG2735700) and MYBIRI transcription factor (HO- VUSG4226000), were identified through integrated transcriptome and chromatin accessibility analyses. [Conclusion] Hulless barley exhibits significant alterations in gene expression and chromatin accessibility in response to powdery mildew infection. AP2/ERF transcription factor (HOVUSG2735700) and MYBIR1 transcription factor (HOVUSG4226000) may play crucial roles in the plant's response to powdery mildew stress. [ABSTRACT FROM AUTHOR]

Objective To analyze the factors influencing poor recovery of renal function in patients with severe unilateral hydronephrosis after relief of obstruction, providing evidence for predicting the recovery of renal function. Methods Clinical data of 55 patients with severe unilateral hydronephrosis and glomerular filtration rate (GFR) < 10 mL/min admitted to Tungwah Hospital from 2015 to 2022 were retrospectively analyzed. All patients underwent percutaneous nephrostomy for temporary relief of the obstruction. Based on the recovery of renal function, all patients were divided into the recovery group and non-recovery group, and the factors influencing renal function recovery after nephrostomy were collected and analyzed. Results Among 55 patients treated with percutaneous nephrostomy for severe hydronephrosis, renal function was recovered in 30 cases (54.5%), and poor recovery in 25 cases (45.5%). Univariate analysis showed no significant differences in terms of gender, side, body mass index (BMI), history of diabetes mellitus, history of hypertension, pre-nephrostomy GFR, and urinary pH of the affected kidney between the recovery and non-recovery groups (all P > 0.05). However, there were significant differences in age, renal parenchymal thickness, ratio of GFR of the affected kidney to total GFR, presence of renal infection, and post-nephrostomy urinary output of the affected kidney between two groups (all P<0.05). Further multivariate logistic regression analysis showed that a pre-nephrostomy ratio of GFR of the affected kidney to total GFR (OR=0.24, 95%CI 0.06-0.98) and a post-nephrostomy urinary output of the affected kidney (OR=0.04, 95%CI 0.01-0.25) were the independent influencing factors of poor recovery of renal function after nephrostomy. Conclusions Partial patients with severe unilateral hydronephrosis and a GFR <10 mL/min can obtain renal function recovery after temporary relief of obstruction via percutaneous nephrostomy. The pre-nephrostomy ratio of GFR of the affected kidney to total GFR <10% and post-nephrostomy urinary output of the affected kidney <400 mL/day are the independent influencing factors for poor recovery of renal function, which can guide clinicians in predicting renal outcome. [ABSTRACT FROM AUTHOR]

The current situation of anesthesia nursing unit construction is described, along with the theoretical basis and methodology for the construction of its nursing-sensitive quality indicators. A review is presented on the construction and application of nursing-sensitive quality indicators in anesthesia nursing units both domestically and internationally. The deficiencies of the current research are summarized and analyzed, and directions for future development are proposed, aiming to provide references for the establishment of uniform, standardized, and scientific nursing-sensitive quality indicators in anesthesia nursing units in the future. [ABSTRACT FROM AUTHOR]

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