Core Viewpoint - The article discusses the winter survival strategies of mosquitoes, highlighting their various overwintering methods and the importance of controlling their populations during winter and early spring to reduce their numbers in the summer. Group 1: Overwintering Strategies - Different species of mosquitoes have distinct overwintering strategies, with some like Culex pipiens and Aedes albopictus overwintering as adults, storing fat for energy and seeking warm, sheltered places [2] - The Asian tiger mosquito (Aedes albopictus) lays eggs that can survive harsh conditions, remaining dormant until favorable conditions return [2] - Some species, such as Anopheles mosquitoes, overwinter in the larval stage, hiding in water bodies that do not freeze completely [2] Group 2: Hiding Places - Overwintering mosquitoes choose hiding places that are warm, humid, sheltered from the wind, dark, and quiet [3] - Common urban hiding spots include underground spaces like basements and parking garages, as well as stairwells and storage areas [3][4] - In outdoor environments, they prefer locations such as straw piles, grass clumps, tree holes, and under fallen leaves [5] Group 3: Control Timing - The best time to eliminate overwintering mosquitoes is during winter and early spring when their activity is low and they are vulnerable [6] - Early spring is particularly effective as mosquitoes have just awakened and have not yet begun to reproduce in large numbers [6] Group 4: Effective Control Measures - Comprehensive measures are needed to control overwintering mosquitoes, combining environmental management with physical and chemical methods [8] - Environmental cleaning is fundamental, including removing standing water from containers and regularly cleaning basements and drains [8] - Physical methods like using electric mosquito swatters are effective in indoor areas, while chemical methods can be applied in high-density areas like garages and hallways [8]

很多食物的营养价值，并不取决于它们的"外形"，而是取决于它们的营养成分。例如： 人民网北京12月16日电 （记者乔业琼）据山东疾控微信公众号消息，生活中，常听人说"吃什么补 什么"。比如：吃核桃补脑，吃红枣补血，吃鱼眼明目……这些说法听起来似乎很有道理，可它们到底 是"生活智慧"，还是"以形补形"的误区？今天，请出三派高手，在厨房论"健"大会上一见真章，看 看"吃啥补啥"究竟是"科学真理"，还是"民间想象"？ 传统派 "以形补形"深入人心：核桃像大脑，所以能补脑；红枣颜色红，所以能补血；腰子像肾脏，所以能 补肾……这些说法流传已久，听起来形象又生动，仿佛是大自然早就准备好的"食疗密码"。 核桃补脑，真正起作用的是α-亚麻酸、抗氧化物质，有助于延缓脑功能退化；其他的坚果也有补脑 效果。 科学派 一是补脑不只靠核桃：多吃坚果，多吃深海鱼、蓝莓等富含Omega-3和抗氧化物的食物。 二是补血优选红肉和动物血：搭配维生素C（如橙子、番茄）促进铁吸收。 三是护眼多吃深色蔬菜：菠菜、西蓝花、玉米、蛋黄中的叶黄素是视网膜的"天然太阳镜"。 四是补肾不如均衡饮食：黑豆、黑芝麻、枸杞等食物富含微量元素，有益肾脏健康，但并非因 ...

Core Viewpoint - Vaccines serve as a crucial enhancement to the immune system, enabling the body to recognize and combat pathogens without experiencing actual infections [2] Group 1: Vaccine Mechanism - Vaccines provide the immune system with a "portrait of the enemy" (inactivated/attenuated vaccines), "weapon models" (recombinant protein vaccines), and "battle manuals" (mRNA vaccines) to prepare for future infections [2] - The immune system can quickly identify and eliminate pathogens upon actual exposure, often without the individual realizing they were infected [2] Group 2: Vaccine Achievements - The smallpox vaccine is noted as the only vaccine that has completely eradicated a disease [3] - The polio vaccine has made "infantile paralysis" a historical term [3] - The HPV vaccine is currently the only vaccine that can prevent cancer [3] Group 3: Common Questions about Vaccines - Vaccines significantly reduce the risk of severe illness and death, functioning more like "bulletproof vests" rather than infallible shields [3] - Common side effects such as localized redness and low fever indicate that the immune system is actively learning [4] - The occurrence of severe adverse reactions is much lower than risks associated with many daily activities [4] Group 4: Herd Immunity - Herd immunity occurs when a sufficient number of individuals are vaccinated, creating a "universal defense" that interrupts the transmission chain of the virus [5] Group 5: Parental Guidance - Parents are encouraged to ensure timely vaccinations for their children, as immunization is a free "shield" provided by the state [6] - It is important to maintain the "small green book" (Children's Vaccination Certificate) as it is essential for health records and school enrollment [6] - Parents should communicate their child's health status to healthcare providers before vaccination [6] - Post-vaccination care includes observing the child for 30 minutes and keeping the injection site clean [7] - Parents should seek authoritative information regarding vaccines from healthcare professionals rather than relying on online rumors [8]

12月16日拍摄的武汉市东湖风景区一角。新华社记者 肖艺九 摄 12月16日拍摄的武汉市东湖风景区一角（无人机照片）。新华社记者 肖艺九 摄 12月16日拍摄的武汉市东湖风景区一角（无人机照片）。新华社记者 肖艺九 摄 12月16日，一列动车从东湖湖面上空驶过（无人机照片）。新华社记者 肖艺九 摄 12月16日拍摄的武汉市东湖风景区一角（无人机照片）。新华社记者 肖艺九 摄 11月19日拍摄的武汉市东湖风景区一角。新华社记者 沈虹冰 摄 12月16日，鸟儿在武汉市东湖风景区的树上栖息（无人机照片）。新华社记者 肖艺九 摄 12月14日，骑行爱好者在武汉市东湖风景区骑行。新华社记者 肖艺九 摄 12月14日在武汉市东湖风景区拍摄的日出。新华社记者 沈虹冰 摄 12月6日，工作人员在武汉市金银湖进行清漂作业。新华社记者 沈虹冰 摄 ...

Core Viewpoint - The implementation of the mandatory national standard GB 46860-2025 for the unique product identification code of civil unmanned aerial vehicles (UAVs) is crucial for promoting the healthy, orderly, and high-quality development of the civil UAV industry in China, set to take effect on January 1, 2027 [1] Group 1: Background and Development - The civil UAV industry in China has entered a critical phase of large-scale, intelligent, and integrated development, with over 1,000 registered manufacturers and more than 3,300 product models by mid-December 2025 [2] - The rapid growth of the industry has revealed challenges such as "multiple codes for one machine," "code-free flights," and "identity impersonation," posing significant challenges for product traceability and flight safety regulation [2] - The establishment of the unique product identification code standard is guided by recent regulations, including the "Interim Regulations on the Flight Management of Unmanned Aerial Vehicles" and the "Several Provisions on the Production Management of Civil Unmanned Aerial Vehicles" [3][4] Group 2: Importance of the Standard - The unique product identification code will enhance safety regulation efficiency, standardize market order, and ensure air traffic and public safety throughout the entire lifecycle of civil UAVs [5] - It will facilitate the implementation of related policies, transforming regulatory requirements into practical applications and providing standardized support for a modern low-altitude governance system [5][6] - The standard will enable unified management of UAV identities and full lifecycle traceability, improving the ability to monitor and manage civil UAVs effectively [5] Group 3: Key Content of the Standard - The standard specifies the coding rules for the unique product identification code, which consists of a 20-character structure for different production entities, ensuring uniqueness and traceability [8] - It outlines the registration and filing requirements for all civil UAVs produced, sold, or used within China, mandating that they be registered in the UAV product information system [9] - A three-layer security protection system is established to ensure the safety and integrity of the unique product identification code, including storage security, anti-tampering measures, and transmission protection [10] Group 4: Implementation and Transition - The standard will be implemented on January 1, 2027, with a 36-month transition period for existing UAVs to comply with the new requirements [11] - During the transition, manufacturers, owners, or importers of existing UAVs must gradually complete the registration of product identity information and make necessary technical modifications [11] - Relevant departments will provide technical guidance and support to assist in the compliance process, while non-compliant UAVs may face operational restrictions post-transition [11]

新疆巴里坤：冬湖取冰 新疆巴里坤：冬湖取冰【2】 新疆巴里坤：冬湖取冰【5】 新疆巴里坤：冬湖取冰【6】 新疆巴里坤：冬湖取冰【3】 新疆巴里坤：冬湖取冰【4】 ...

江西南昌：冬日杉景醉游人【5】 江西南昌：冬日杉景醉游人【3】 江西南昌：冬日杉景醉游人【4】 江西南昌：冬日杉景醉游人 江西南昌：冬日杉景醉游人【2】 ...

安徽蒙城：采收甘蓝 供应市场【4】 安徽蒙城：采收甘蓝 供应市场【5】 安徽蒙城：采收甘蓝 供应市场【2】 安徽蒙城：采收甘蓝 供应市场【3】 安徽蒙城：采收甘蓝 供应市场 ...

广西三江：传统花炮节举行 广西三江：传统花炮节举行【2】 广西三江：传统花炮节举行【3】 广西三江：传统花炮节举行【4】 广西三江：传统花炮节举行【5】 ...

12月15日，观众参观展览。 12月15日，观众参观展览。 12月15日，观众参观展出的景泰蓝作品《兵马战车》。 12月15日，嘉宾为展览揭幕。 12月15日，观众参观展出的景泰蓝作品《福禄万代》。 12月15日，观众参观展览。 ...