Functional utilization of biochar derived from Tenebrio molitor feces for CO2 capture and supercapacitor applications

Biochar has attracted great interest in both CO₂ capture and supercapacitor applications due to its unique physicochemical properties and low cost. Fabrication of eco-friendly and cost-effective biochar from high potential biomass Tenebrio molitor feces can not only realize the functional application of waste, but also a potential way of future carbon capture and energy storage technology. In this study, a novel KOH activation waste-fed Tenebrio molitor feces biochar (TMFB) was developed and investigated in terms of CO₂ capture and electrochemical performance. When activated at 700 °C for 1 h, the specific surface area of the feces biochar (TMFB-700A) increased significantly from 232.1 to 2081.8 m² g⁻¹. In addition, well-developed pore distribution facilitates CO₂ capture and electrolyte diffusion. TMFB-700A can quickly adsorb a large amount of CO₂ (3.05 mol kg⁻¹) with excellent recycling performance. TMFB-700A also exhibited promising electrochemical performance (335.8 F g⁻¹ at 0.5 A g⁻¹) and was used as electrode material in a symmetrical supercapacitor. It provided a high energy density of 33.97 W h kg⁻¹ at a power density of 0.25 kW kg⁻¹ with 90.47% capacitance retention after 10 000 charge–discharge cycles. All the results demonstrated that TMFB could be a potential bifunctional material and provided valuable new insights for Tenebrio molitor feces high-value utilization.

Biochar has attracted great interest in both CO₂ capture and supercapacitor applications due to its unique physicochemical properties and low cost.     

海绵疣孢菌FIM06031产生的2'-脱氧尿嘧啶核苷

目的 研究分离自海绵的菌株FIM06031产生的次级代谢产物.方法 系统发育、形态特征和生理生化特性分析鉴定菌株FIM06031到属水平.有机溶媒提取菌株FIM06031发酵液,用正相硅胶柱层析、Sephadex LH-20凝胶柱层析和高速逆流色谱等方法对菌株次级代谢产物进行分离和纯化.通过紫外光谱、红外光谱、核磁共振氢谱(1H)和碳谱(13C)等分析对化合物FW03101进行结构鉴定.结果 与结论菌株FIM06031属于疣孢菌属(Verrucosispora),定名为Verrucosispora sp.FIM06031,其中一个代谢产物FW03101与2'-脱氧尿嘧啶核苷(2'-Deoxyuridine)同质.本文首次报道从疣孢菌中分离到2'-脱氧尿嘧啶核苷.     

田菁以磷增氮的研究

对环境施磷增加田菁[Sesbania cannabina(Retz.)pers.]结瘤固氮的作用是有限度的,受环境供磷水平的制约。 在广州石牌地区花岗岩发育赤红壤中,田菁以磷增氮的土壤有效磷临界水平(ppm P)为25.6(0.1 N HCL法)。 在无氮培养液中,秋植和春植田菁以磷增氮的供磷临界水平(毫摩尔P)分别为0.78和0.48,植株体内含磷量的临界水平(P％)分别为0.213和0.157。该临界供磷水平与含磷量有受季节性影响的倾向。介质的高磷水平还会引起田菁固氮量的下降。 在低磷的介质中,增磷对田菁根瘤的形成,发育和固氮酶活性有明显的促进作用。在磷供应达到一定水平后,继续增磷的促进作用不显著。未发现高磷供应对田菁的根瘤数有不良影响,但对其根瘤干重、特别是固氮酶活性有抑制作用。     

我院2001～2005年抗感染药利用分析

目的:了解我院抗感染药的应用状况及趋势。方法:采用金额排序法和用药频度(DDDs)排序法对我院2001～2005年抗感染药应用数据进行统计、分析。结果:我院抗感染药销售金额占药品总销售金额的24.63%～28.47%,销售金额较大的是头孢菌素类和复方β-内酰胺酶抑制剂,占抗感染药销售金额的2/3以上;DDDs较大的是第2代头孢菌素类和青霉素类。结论:头孢菌素类和复方β-内酰胺酶抑制剂在我院的应用占主导地位。     

复方鳖甲软肝片联合恩替卡韦治疗慢性乙型肝炎疗效观察

目的 观察复方鳖甲软肝片联合恩替卡韦对慢性乙型肝炎患者肝功能、免疫功能及血清纤维化指标的影响.方法 将168例患者随机分为两组,对照组口服恩替卡韦,治疗组在对照组治疗基础上,加服复方鳖甲软肝片,48周为1个疗程.结果 两组治疗前后肝功能、外周血T淋巴细胞哑群和血清肝纤维化指标比较均有统计学意义(P<0.01或P<0.05),治疗后组间比较治疗组优于对照组(P<0.01或P<0.05).结论 复方鳖甲软肝片联合恩替卡韦治疗慢性乙型肝炎有效.     

二甲双胍对胃癌合并2型糖尿病患者预后影响的Meta分析

目的:系统评价二甲双胍对胃癌合并2型糖尿病患者预后的影响。方法:计算机检索Pubmed、Cochrane library、Embase、知网、万方、维普等数据库,由两名研究员根据纳入、排除标准分别对检索文献进行筛选、质量评价及数据提取。使用RevMan5.4软件对总体生存率、癌症特异性生存率、无复发生存率进行Meta分析,效应量为风险比(hazard ratio, HR),各效应量以95%置信区间(confidence interval, CI)表示。结果:总共纳入10项研究,共计2 522例患者。Meta分析的结果显示,与未使用二甲双胍的患者相比,二甲双胍的使用能够提高胃癌合并2型糖尿病患者的总生存期(HR=0.71,95%CI:0.63～0.80,P<0.000 01)、癌症特异性生存期(HR=0.76,95%CI:0.65～0.90,P=0.001)及无复发生存期(HR=0.58,95%CI:0.47～0.72,P<0.000 01)。结论:与非二甲双胍治疗相比,接受二甲双胍治疗的胃癌合并2型糖尿病患者能够改善预后,总生存期、癌症特异性生存期及无复发生存期得到延长。     

High hemoglobin fluctuation was a protective factor for cardiovascular‐related death in peritoneal dialysis (PD) patients: A retrospective analysis of 232 patients with PD

ObjectivesThis study aimed to investigate the effect of hemoglobin (Hb) fluctuation after dialysis on the prognosis of cardiovascular‐related and all‐cause deaths in peritoneal dialysis (PD).MethodsAccording to the Hb fluctuation, patients were divided into low fluctuation group, moderate fluctuation group, and high fluctuation group, and then, the effects of Hb fluctuation after dialysis on the prognosis of cardiovascular‐related and all‐cause death in PD were analyzed by regression analysis.ResultsA total of 232 patients were selected in this study. Compared with the low Hb fluctuation group, the moderate and high fluctuation groups had lower body mass index (BMI), estimated glomerular filtration rate (eGFR), and baseline Hb, and the moderate fluctuation group had less erythropoietin (EPO) and dialysis dose. Compared with survivors, patients with cardiovascular‐related and all‐cause deaths had lower mean Hb and Hb fluctuation (all p < 0.05). Cox regression analysis showed that before and after adjusting for confounding factors, Hb fluctuation was still independently correlated with cardiovascular prognosis, and higher Hb fluctuation was still a protective factor for cardiovascular‐related death in the Hb‐substandard group, but there was no significant correlation between Hb fluctuation and all‐cause death. Multivariate linear regression analysis revealed that Hb fluctuation was positively correlated with Kt/V and EPO dosage, but negatively correlated with the baseline Hb.ConclusionHigh Hb fluctuation was a protective factor for cardiovascular‐related death in PD with substandard Hb. Compared with Hb fluctuation, correction of anemia timely and making Hb reaches the standard level had a greater impact on reducing cardiovascular‐related death in PD.     

血管内皮生长因子基因rs699947位点多态性与汉族女性乳腺癌易感性的相关性

目的 探讨血管内皮生长因子（VEGF）基因rs699947位点多态性与汉族女性乳腺癌易感性的相关性。方法选取2013年3月至2018年8月黑龙江省齐齐哈尔和大庆地区的258例乳腺癌患者作为乳腺癌组,选取同期162例健康女性作为对照组。采用PCR技术对外周血细胞进行基因分型。结果 两组的等位基因和基因型分布比较,差异有统计学意义（P<0.05）。校正混杂因素后,基因型AC和AA对乳腺癌的风险预测值分别为0.341和0.170(P<0.05)。显性模型和隐性模型下对乳腺癌的风险预测值分别为0.276和2.657(P<0.05)。结论 VEGF基因rs699947位点多态性与乳腺癌易感性存在明显关联,基因型AC和AA是乳腺癌发病的保护因素。     

近红外光谱法在药学上的应用

介绍了近红外光谱法的基本原理,及其在药物原材料,包装材料,制剂分析,生产过程监控及质量控制等方面的应用。