The role of cholesterol in modifying the lipid-lowering effects of Fuzhuan brick-tea in Caenorhabditis elegans via SBP-1/SREBP

Fuzhuan brick-tea(FZT)has long been consumed for its supposed weight loss and lipid-lowering benefi ts.In this study,we show that the regulation of fat storage in Caenorhabditis elegans from a water extract of FZT was affected by cholesterol levels.We found that FZT signifi cantly decreased fat storage under normal cholesterol levels or in a cholesterol-free diet,while lipid accumulation was increased for a high cholesterol diet.Moreover,this mechanism may involve the conserved sterol regulatory element-binding protein(SREBP)/mediator-15(MDT-15)signaling pathway and the nuclear hormone receptor NHR-80.In addition,lipid synthesis-related genes inhibited by FZT were partially affected by a cholesterol-free diet.Thus,our fi ndings suggested that the potential lipid-lowering effects of FZT may depend on the cholesterol level,which may help to improve the consumption of FZT.

基于YOLO v8-Tea的茶叶病害检测方法

针对真实场景下复杂的茶叶病害特征检测准确率低、误检率和漏检率高,以及难以进行移动设备上部署等问题,提出一种基于YOLO v8-Tea的茶叶病害检测算法。该算法是在YOLO v8的基础上做的改进,首先,替换了C2f中的Bottleneck,采用FasterBlock来减少参数量和计算量。同时,引入了多尺度注意力EMA模块,以增强全局上下文信息的获取。最后,采用BiFPN模块,以更好地融合多尺度特征,并改进了颈部网络,以提高检测精度。结果表明,YOLO v8-Tea算法在平均精度方面比传统YOLO v8n提高了5.7百分点,从而能更准确地检测复杂的茶叶病害特征。与此同时,模型的参数量和计算量分别减少了47.9%和28.4%,模型的权重文件的大小减小了45.2%,仅为3.4 M。YOLO vs-Tea算法的平均精度比经典的YOLO系列算法中的YOLO v4-tiny、YOLO v5n、YOLO v6n、YOLO v7-tiny分别提高24.6、6.8、5.5、2.5百分点。这些改进使得本研究算法更适合茶叶病害检测任务以及在移动设备中的高效部署。该算法在茶叶病害检测方面取得了显著的性能提升。通过降低参数量和计算量以及优化模型的部署,为实际农业场景中的茶叶病害检测提供了一个更可行的解决方案,为茶叶产业提供了有前景的技术,可以提高茶叶病害检测的效率和准确性。

Investigation of Refractory Bricks and Oxide Materials Heated in Hydrogen Reduction Conditions

This study aims to provide the basic knowledge for furnace refractory design by investigating refractory property changes occurred in a hydrogen atmosphere.Since refractory bricks are thermodynamically stable in a hydrogen atmosphere at 1100°C,we tried to find out the minute changes.In this experiment,a refractory brick was prepared by andalusite,mullite chamotte,and clay as raw materials and heated to 1100°C in a 100%hydrogen atmosphere for 72 h.It was found that the strength of the brick was decreased and the color was changed to black by the reduction of impurities.And in addition,this study covered research on the slaking risk of MgO raw materials because the minimum temperature is expected to 400°C in fluidized reduction furnaces unlike shaft furnaces.

Visual Analysis of Domestic and Foreign Building Brick Skin Research Based on Citespace

With the progress of the times and the leap of science and technology,the application of brick materials and the research on the brick skin in modern architectural design have shown a dual-track development trend of returning to tradition and innovation.Based on the core collection database resources of Web of Science and the CiteSpace visual analysis tool,this paper constructed and analyzed the spatio-temporal map of keyword co-occurrence network,cluster structure,mutation phenomenon,time course and regional distribution map of building brick skin research.The study revealed that in recent years,the research on brick materials has spanned the study of single material properties and extensively involved in the broad world of construction,especially in the integration of green energy-saving technology,the innovation of fine construction technology of brick skin,and the frontier exploration of digital technology in brick masonry,which has shown particularly significant research vitality and development potential.

Assessment of Cement-Lime as Stabilizer on Mud Bricks

The aim of this study was to evaluate the compressive strength of clay bricks and their stability to water absorption by inserting stabilizers such as lime and cement of 0%, 4%, 6%, 8%, 10%, 12% to 14%. Spectrometric analysis was used to characterize the various stabilizers and the clay used, and tests of resistance and water absorption were also carried out. The clay was found to be an aluminosilicate (15.55% to 17.17% Al2O3 and 42.12% to 44.15% SiO2). The lime contains 90.84% CaO and the cement has 17.80% SiO2, 3.46% Al2O3, 2.43% Fe2O3 and 58.47% CaO in the combined form of tricalcium silicate, dicalcium silicate, tricalcium aluminate and ferro-tetra calcium aluminate. The results showed that the insertion of locally available stabilizers (lime and cement) improved the strength of the material by almost 80% when the lime was increased from 0% to 14% for 14 days. For compressed cement, a 65% increase in strength was observed under the same conditions. Strength increases with drying time, with a 52% increase in strength at 28 days compared to 14 days. Furthermore, compressed cement bricks have a more compact structure, absorbing very little water (32%). In view of all these results, cement appears to be the best stabilizer, and compression improves compressive strength and reduces water absorption.

Bricks and Clicks模式下供应链协调研究

建立了由一个制造商和一个分销商组成的基于电子市场的二级供应链模型,讨论了分销商采用Bricks and Clicks模式分销产品,并在电子渠道进行季节后销售的情况,分析了供应链的契约协调问题及供应链成员的利润情况.研究发现改进的回购契约可以使Bricks and Clicks分销模式下基于电子市场的二级供应链模型达到协调,使分销商的订货量达到供应链最优,并且使供应链成员的利润达到Pareto改进,达到"双赢".最后,通过算例验证了结论.

Processing Technology and Quality of Low-fluoride Brick tea

In order to promote the quality of brick tea and reduce its fluoride content, the fluoride contents in leaves of 25 tea varieties at the .stage of one bud and five leaves were determined by the method of fluodde-ion selective electrode method. The results showed that the fluodde contents in the 25 varieties were in the range of 181.92-345.06 mg/kg, end the fluoride content in ＇Zhongcha 302＇ was the lowest. Based on traditional production process of brick tea, 3 new low-fluoride brick tea production processes with ＇Zhongcha 302＇ as the raw material at the stage of one bud and five leaves were constructed. The fluoride content, physicochemical in- dex, sensory end main chemical contents in the brick tea samples were determined. The best processing process of Iow-fluodde brick tea was process 3, which included aldng, fixing, rolling, second fixing, second roiling, sun-drying, pile-fermentation, steaming, pile-fermentation, drying and shaping into brick by vapor treating. The re- sults showed that the fluoride content and physicochemical index of the brick tea sample of the third low-fluoride brick tea production process accorded with National Standard GB/T 9833.4-2013. The sensory evaluation of the brick tea sample was better than that of brick tea manufacture by the traditional process. The water extract, tea polyphenols, amino acids, caffeine and water-soluble sugar in the brick tea sample increased by 9.41%, 36.39%, 26.94%, 27.23% and 15.29%, respectively. Low-fluodds bdck tea could be produced by selecting low fluoride tea varieties, controlling the tondemess of fresh leaves, and optimizing the processing technique.

The Effects of Nutrition Lick Brick and Salt Brick as Supplement Feed on the Production Performance of Tan Sheep

In the paper, the effects of nutrition lick brick and salt brick as supple-ment feed on the performance of Tan sheep were studied. 36 fattening Tan sheep with the average weight of about 23 kg were chosen, they were randomly divided into 3 groups according to the weight, and each group had 12 sheep. Control group was fed with normal daily ration, experimental group 1 was fed with normal daily ration＋nutrition lick brick, experimental group 2 was fed with normal daily ration＋salt brick, the experimental period was 60 d. The results showed that 1） compared with CK, daily gain of group 1 improved 17.09%（P〈0.01）, feed conversion ratio reduced 11.69%（P〈0.05）, and average gross profit per sheep improved 51.65 yuan; daily gain of group 2 improved 7.03%（P〈0.05）, feed conversion ratio reduced 4.06%（P〉0.05）, and average gross profit per sheep improved 19.78 yuan; 2） compared with group 2, daily gain of group 1 improved 9.40%（P〈0.05）, feed conversion ratio re-duced 7.96%（P〈0.05）, and average gross profit per sheep improved 31.87 yuan;these indicated that nutrition lick brick and salt brick as supplement feed for Tan sheep both can improve the production performance of Tan sheep, and the supple-mentary feeding effect of nutrition lick brick was better.

用brick-wall方法计算黑洞熵的再讨论

在薄层模型brick wall方法的基础上 ,进一步研究了黑洞熵的计算 ,发现黑洞熵来源于其视界面上每一个面元的贡献 .熵与视界面积成正比 ,不但适用于整个黑洞 ,也适用于黑洞视界的局部 .这一思想不但可以用于计算表面各点温度不同的动态黑洞的熵 ,而且使得人们对黑洞熵与视界面积关系的认识更加深入了一步 .

The Cultural Implication of Brick Carving Model Calligraphy in Shanxi Chang's Manor

Focusing on the unique style of brick carving model calligraphy in Shanxi Chang's manor,this research analyses the content and feature of the different parts of brick carving,and discuses the presenting cultural deposits.It reflects the deep Confucian culture of Shanxi Chang's manor,with the peculiar charming in culture and aesthetic value.

陕北地区传统民居靠崖式砖窑承载力及稳定性评估

为研究陕北地区传统民居靠崖式砖窑的承载能力及稳定性,通过现场检测和调查靠崖式砖窑的残损情况及坍塌区域对整体结构的影响,采用有限元软件ABAQUS对窑洞单体和窑洞-边坡整体进行了承载力和稳定性分析。研究结果表明:靠崖式砖窑较严重残损主要分布在窑腿、拱顶,病害主要表现为窑腿开裂和外闪,拱券开裂、局部松动乃至坍塌;坍塌区域的地基由于应力释放引起上部窑洞部分区域倾斜、开裂;窑洞单体在外荷载作用下变形及应力较小,受地震作用影响较小;窑洞-边坡模型失稳时的强度折减系数为1.15,表明该边坡目前处于稳定状态,在降水较多时存在失稳的风险。

Investigation of the medium calcium based non-burnt brick made by red mud and fly ash: durability and hydration characteristics

Red mud is a type of highly alkaline waste residue produced in the process of alumina smelting by the Bayer process.Based on the idea of medium calcium content,solid wastes such as red mud and fly ash were used to prepare non-burnt bricks;and the mass ratio of CaO/SiO2 was selected in the range of 0.88–1.42.Mechanical properties and durability were investigated with a compressive strength test.X-ray diffractometry(XRD),scanning electron microscope(SEM),and Fourier transform infrared spectroscopy(FTIR)techniques were used to characterize the hydration characteristic.The environmental performance was analyzed by Inductively Coupled Plasma Mass Spectrometry(ICP).The results indicated that the mechanical properties and the durability were optimal when the mass ratio of CaO/SiO2 was 1.23.The hydration products were mostly C–S–H gel,ettringite,Na4Ca(Si10All6)O32·12H2O and Ca3Al2(SiO4)(OH)8.They were responsible for the strength development,and the CaO/SiO2 mass ratio of 1.23 had the best polymerized structure.The results of an environmental performance test showed that the heavy metals in the raw materials were well-solidified in the brick.Therefore,this paper provides an effective solution for use of solid wastes in building material.

铁铝氧化物对BaCl_2-TEA法测定土壤交换性酸的影响

【目的】本文探讨了铁铝氧化物对BaCl_2-TEA提取法测定土壤交换性酸结果准确性的影响。【方法】采用BaCl_2-TEA法测定了添加6种不同铁铝氧化物(无定型铁、α-Fe_2O_3、针铁矿、无定型铝、γ-Al_2O_3和三水铝石)后酸性紫色土的交换性酸含量。【结果】相比于α-Fe_2O_3、三水铝石、γ-Al_2O_3和针铁矿,化学活性较高的无定型铁和无定型铝具有较低的pH值和存在大量的Fe3+或Al3+溶出,酸性环境和Fe3+或Al3+的存在会消耗更多的TEA,造成计算得到的土壤交换性酸含量偏高。【结论】由于Al3+是致酸离子而Fe3+是干扰离子,因此不宜采用BaCl_2-TEA法测定无定型铁或Fe3+含量较高的酸性土壤的交换性酸含量。此外,对无定型铝存在的潜在酸化风险也应引起重视。

The characteristics of dissolution of fluoride and aluminum from brick tea

Four experiments have been done on the influence of times of infusion, temperature, time and ratio of tea to water on the dissolving characteristics of fluoride and aluminum in brick tea. According to the results, the behaviors of F and Al which found their way into tea liquor were analyzed and the conclusions have been drawn: the dissolution of F and Al is not synchronous and after the elements find their way into tea liquor respectively, they will be reset to form complexes of F and Al.

用brick-wall方法计算MRN黑洞内视界的熵

利用薄层模型brick-wall方法计算了MRN黑洞内视界的熵,得出了黑洞熵与视界面积成正比的结果。

Study on Properties of Magnesia-Hercynite Brick

Using magnesia and hercynite as materials, we researched the magnesia hercynite brick in order to solve the problem of chrome free brick used in the burning zone of cement rotary kiln. Effect of different firing temperature and different content of hercynite on properties of the brick were studied. The results show that the magnesia hercynite specimen fired at 1600℃ was densified and when the hercynite content is 7%, the cold crushing strength and the adhesive strength of rupture of the specimen have the highest value.

面向学术出版的数据增强解决方案--基于67Bricks的案例研究

在技术和科研用户需求变化的驱动下,软件开发咨询公司67Bricks着眼于海量数据及数据技术给学术出版业带来的巨大变化和机遇,帮助出版商从传统的内容提供商转型为数据驱动的内容服务商。在技术理念上,以数据技术和人工智能为核心设计模块化平台,使出版商可以更高效、更可靠地创建和管理内容;在业务模式上,通过协作方式,深度参与学术出版商变革的全流程活动;在市场定位上,以与学术出版商建立长期合作伙伴关系为中心,而不是将自身定位为仅提供技术资源的软件供应商。本文对67Bricks助力学术出版商的相关实践进行总结和评价,以供我国学术出版企业在制定数据驱动发展战略时进行比较和借鉴。

Enhanced strength in novel nanocomposites prepared by reinforcing graphene in red soil and fly ash bricks

Low-dimensional nanomaterials such as graphene can be used as a reinforcing agent in building materials to enhance the strength and durability. Common building materials burnt red soil bricks and fly ash bricks were reinforced with various amounts of graphene, and the effect of graphene on the strength of these newly developed nanocomposites was studied. The fly ash brick nanocomposite samples were cured as per their standard curing time, and the burnt red soil brick nanocomposite samples were merely dried in the sun instead of being subjected to the traditional heat treatment for days to achieve sufficient strength. The water absorption ability of the fly ash bricks was also discussed. The compressive strength of all of the graphene-reinforced nanocomposite samples was tested, along with that of some standard (without graphene) composite samples with the same dimensions, to evaluate the effects of the addition of various amounts of graphene on the compressive strength of the bricks.

Comparative study on Leaf Tissue Morphologic Changes of Chang-Sheng-Chuan Green Brick Tea Before ad After Fermentation

[Objective] The aim was to understand the change of fermentation pro- cess of Chang-sheng-chuan green brick tea and analyze the changes in the con- tents of structure components of tea leaves before and after fermentation. [Method] Ten tea leaves before and after fermentation were chosen. The tea leaves sections were made using paraffin microtomy, PAS staining, and observed under light mi- croscopy. Through image analysis for the tea leaves, we compared the changes on the areas of the cellulose and colloid in cell before and after pile-fermentation. At the same time, the tea leaves were observed under transmission electron micro- scope. [Result] The results showed that the pile-fermentation process caused the tea leaves tissue to become loose, and expanded the cell space. Besides, the cell wall of tea leaves was obviously thinning, and even breaking which composed of cellulose. Image analysis showed that the leaf fiber composition reduced significant- ly, with a corresponding increase of yellow colloid in cell. Under observation of transmission electron microscope, there were large amounts of fungi located in the space between the colloid and the cell wall of the tea leaves after pile-fermentation. [Conclusion] The fermentation of Green brick tea is the process of microbial bio- transformation of tea, which is dominated by microbe and consumed the cellulose components of tea leaves.