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房子“会呼吸” 节能超九成_我的网站
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North China's Inner Mongolia Autonomous Region has launched a genomic breeding tool for dairy cattle, also known as a gene chip, enabling precise screening for key traits such as high milk yield, high fertility, disease resistance and longevity, and marking a fresh breakthrough in China's dairy cattle breeding technology, the Inner Mongolia Daily reported on Saturday.
As an iteration of the previous generation dairy cattle breeding array, which holds proprietary intellectual property rights, the new-generation "Breeding No.2" breeding array was led by the National Center of Technology Innovation for Dairy and developed by Youran Dairy Saikexing, with upgrades in loci coverage, compatibility and gene-trait prediction algorithms.
The "Breeding No.2" breeding array covers about 50,000 loci across the dairy cattle genome, with a focus on functional loci tied to milk production, reproduction, disease resistance and length of productive life. It has achieved a sample call rate of 99.65 percent and a genotyping concordance rate of 99.91 percent for duplicate samples, and is compatible with mainstream international chips, allowing historical breeding data to be shared and reused.
Drawing on a phenotype database and genome resequencing data to optimize a proprietary algorithm, advancing breeding evaluation from qualitative screening to quantitative assessment, bringing the accuracy of breeding stock selection up to advanced international levels, according to the report.
The breeding array enables more precise genomic selection of calves at an early stage, substantially shortening the generation interval in breeding bull selection and cutting spending on raising low-performing replacement heifers. Compared with imported high-density chips, the "Breeding No.2" chip carries a lower per-sample testing cost and delivers stronger input-output returns, making it highly suited to large-scale dairy cattle breeding operations in China, the report said.
Global Times
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B | 在涿鹿经济开发区，有一家公司造的房子“会呼吸”。“为啥说这房子‘会呼吸’呢？因为它是被动式超低能耗建筑，即使不开窗通风，室内空气也能与室外循环，温度、湿度会自动调节，就像有了自然顺畅的呼吸。”8月14日，在中规低碳（张家口）建筑技术有限公司的样板房内，该公司市场部部长李宏利向客商介绍超低能耗建筑的优势。
8月14日，在中规低碳（张家口）建筑技术有限公司的样板房外，工作人员向客商介绍被动式超低能耗建筑的优势。日报记者 郭晓通摄窗外是交通主干道，样板房门窗紧闭，记者在室内听不到车辆驶过的声音，也感觉不到憋闷。从外表看，样板房与一般建筑差别不大，特别之处在于不依赖空调和暖气，室内温度可常年稳定在20至26摄氏度。
C | “被动式超低能耗建筑就像保温瓶，夏天隔热、冬天保温，比传统建筑节能90%以上。”该公司副总经理杨冬明介绍，“会呼吸”的房子应用了10余项专利，采用了许多节能环保“黑科技”。
D | 在公司展厅，李宏利向记者展示了绿色建筑材料的神奇之处。她拿着便携喷火枪，烧灼一块薄薄的白色板材，板材竟无变化、不燃烧。记者用手触摸其背面，也感觉不到发烫。
E | “这是用来制作墙体的轻骨料，防火、保温。”李宏利说，超低能耗建筑还搭配了高性能门窗系统，有效解决房屋夏天不隔热、冬天不隔冷的问题。针对超低能耗建筑气密性高的特点，该公司研发了新风系统，室外空气进入多功能一体机过滤，净化后的新鲜空气被输送到每个房间中。北方地区冬季寒冷，新风系统排出室内空气的同时，能将78%的热量进行回收利用，使房子达到恒温状态，避免了频繁开窗换气、冷风灌入的困扰。时间久了，超低能耗建筑内的空气会不会变差？在密闭样板房内，李宏利拿着手中的空气负氧离子检测仪给出了答案，检测仪上显示负氧离子数为2700个/cm3。
F | “除了新风系统，我们还应用新型室内装修材料，常年缓慢释放负氧离子，使室内空气保持清新。”李宏利说。据介绍，装配式建筑作业像搭积木一样，采用系统化设计、模块化拆分、工厂制造、现场装配的方式建造，缩短建筑工期，节约建筑成本。如今，节能建筑在全国加速推广，促进城乡建设加快绿色转型。“这带来了更多的市场机会，目前我们已在京津冀及山西、内蒙古等地打开市场，让更多节能环保的好房子走进人们的生活。”杨冬明表示。（日报记者 郭晓通）。
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Published on:01:52:50