The scientific experiments were led by Leibniz Institute of Animal and Wildlife (Leibniz-IZW) and chaired by Professor Richard A. Holland (Bangor University, UK) and Dr. Gunārs P ē tersons (Latvia University of Life Sciences and Technology). It shows that now the cornea of ​​the eye is the site of an important sense in bat migration. A bat’s directional sense is its eyes. If the cornea is anesthetized, the otherwise reliable sense of orientation will be disturbed while the ability to detect light remains unaffected. The paper was published in the scientific journal Communications Biology. In the bats of one experimental group, the scientists locally anesthetized the cornea with a drop of oxybuprocaine. This surfactant is widely used in ophthalmology, where it is used to temporarily desensitize the cornea when the human or animal eye is over-irritated. However, an effect on orientation has not been noted before. In another experimental group of bats, the team anesthetized the cornea of ​​one eye. Individuals in the control group were not given anesthesia, but were instead given isotonic saline as eye drops. All animals in this scientific experiment were captured in a migratory corridor on the Baltic coast and released individually in the open field 11 km from the place of capture. First, the scientists used bat detectors to ensure that no other bats were in the field at the time of releasing the test animals. The direction of movement of the released bats was observed without knowing how the bats were treated experimentally. Dr. Oliver Lindecke, first author of the paper, explains: “The control group and the anesthetized group with unilateral corneas clearly oriented to the expected south, while the bats with corneas were anesthetized. both sides fly in random directions.” He added: “This clear difference in behavior suggests that corneal anesthesia has disrupted the sense of direction, but orientation seems to still work well with one eye. The corneal treatment wore off after a short time, and the bats were able to continue their journey south after the trial.” To rule out the possibility that an irritated cornea also affects visual sensation and that the scientists could therefore draw erroneous conclusions, they performed an additional test. Again, they examined whether the bats’ response to light changed after anesthetizing the corneas on one or both sides. “We know from previous research that bats prefer a illuminated exit when leaving a simple Y-shaped maze,” explains PD Dr Christian Voigt, head of the Leibniz-IZW Department of Evolutionary Ecology . “In our experiment, animals that were anesthetized either unilaterally or bilaterally also showed this preference; we can therefore rule out that light vision has been altered after corneal treatment. The ability to see light will of course also affect long-distance navigation. ” For instance, many vertebrates such as bats, dolphins, whales, fish and turtles can safely navigate in the dark, whether it’s under the open night sky, when it’s cloudy at night or in caves and tunnels as well as in the depths of the ocean. For decades, scientists have searched for a sense or a sensory organ that enables animals to perform navigational and orientation tasks that seemed unimaginable to humans. Magnetic sensation, so far only demonstrated in certain mammalian species. Experiments show that iron oxide particles in cells can act as “microcompass needles”, as is the case with some species of bacteria. The team’s experiments on Lindecke and Voigt provide for the first time reliable data for determining sensory orientation in migratory, free-migrating mammals. Exactly what a bat’s cornea looks like, how it works, and whether it is a long-sought magnetic sense need to be pointed out in future scientific investigations.

The bat’s sense of direction are the eyes. Mammals see with the eyes, hear with the ears, and smell with the nose. But which senses or organs allow them to direct their migration, sometimes beyond their feeding area and thus require extensive orientation? Scientific experiments led by the Leibniz Institute for Animal and Wildlife Research (Leibniz-IZW) led by Professor Richard A. Holland (Bangor University, UK) and Dr. Gunārs P ē tersons (Latvian University of Life Sciences and Technology). It shows that the cornea of ​​the eye is now an important sensory site for bat migration. If the cornea is anesthetized, another sense of reliable direction is disturbed while its ability to detect light remains unaffected. The article was published in the scientific journal Communications Biology. In the bats of an experimental group, the scientists localized the cornea with a drop of oxybuprocaine. This surface anesthetic is widely used in ophthalmology, where it is used to temporarily desensitize the cornea when the human or animal eye is overly irritated. However, the influence on the orientation has not been noted before. In another group of experimental bats, the team anesthetized the cornea of ​​one eye. Individuals in the control group received no anesthesia, but instead received an isotonic saline solution as eye drops. All animals in this scientific experiment were caught in a migration corridor on the Baltic coast and released individually in open fields 11 km from the capture site. First, scientists used bat detectors to ensure that there were no other bats in the field at the time of releasing the test animals. One observes the movement of the released bats not knowing how the bats have been treated experimentally. Dr. Oliver Lindecke, the first author of the paper, explains: “The control group and the one-sided corneal anesthetic group had a clear orientation to the expected south, while the bats with the cornea were anesthetized. the two sides fly in random directions. ” “This obvious difference in behavior suggests that corneal anesthesia disrupted the sense of direction, but the ability to orient seems to still work well with one eye,” he added. After a short time the corneal treatment ended, the bats were able to resume their journey south after the test. ” To rule out the possibility that an irritated cornea also affects visual sensations and so scientists could have come to the wrong conclusion, they performed an additional test. Again, they tested to see if a bat’s response to light changed after anesthesia on one or both sides. “We know from previous research that bats prefer a illuminated exit when leaving a simple Y-shaped maze,” explained PD Dr. Christian Voigt, head of the Leibniz-IZW Department of Evolutionary Ecology. . “In our experiment, animals under one or two side anesthesia also showed this preference,” he said; we can therefore rule out that light vision has been altered after corneal treatment. Light visibility will of course affect long-distance navigation as well. ” For example, many vertebrate species such as bats, dolphins, whales, fish and turtles can navigate safely in the dark, whether it is under the open night sky, when it is cloudy at night. or in caves and tunnels as well as in the depths of the ocean. For decades, scientists have been searching for the senses or a sensory organ that makes it possible for animals to perform navigation and navigation tasks that seem unimaginable to humans. The magnetic sensation has so far been demonstrated only in some mammals. Experiments have shown that iron oxide particles in a cell can act as “microscopic compass needles”, as is the case with some species of bacteria. The team’s experiments on Lindecke and Voigt provide, for the first time, reliable data for the determination of sensory orientation in free-migrating, migratory mammals. Exactly what a bat’s cornea looks, how it works, and whether it is a long-sought magnetic sense needs to be pointed out in future scientific investigations.

The fire at a hospital in the Virar area of ​​Mumbai suburbs occurred two days after 24 patients using the COVID-19 ventilator died from an oxygen leak at a hospital in Nashik, another city in the state Maharashtra. At the time of the fire, about 90 patients were being treated in the hospital, some patients needing oxygen were transferred to nearby hospitals. Dilip Shah, CEO of Vijay Vallabh Hospital, said the fire in the intensive care unit on the second floor had been extinguished. Cause of the fire is currently under investigation. The fire came as the state of Maharashtra, hardest hit by the COVID-19 pandemic, is struggling with skyrocketing infections. 314,835 COVID-19 cases recorded in India on Thursday brought the total number of cases in the country since the pandemic began to 15.9 million, second only to the United States. This is also the 7th consecutive day that India has recorded a number of new cases above 200,000. The COVID-19 pandemic had gone badly and put the health system in this country at risk of collapse. Hospitals are overloaded with patients and a serious shortage of manpower. Many hospitals in the western and northern regions of India, including the capital New Delhi, announced that the supply of oxygen was about to be depleted. Sponsorship news

The reporter learned that Beijing Lizetian Street has a commercial building area of ​​92,000 square meters, consisting of 5 floors above ground and 2 floors underground. Up to now, the investment promotion rate of the project has reached 100%, and nearly 200 brands have settled in. Nearly half of the brand stores are concept stores, customized stores, and image stores, including Michelin-starred restaurants, life aesthetics experience halls, new retail smart stores, International fashion designer brand. Lize Financial Business District It is the first “five-line transfer” area in the Beijing subway plan, as a place where rail transit lines 11, 14, and 16, Daxing International Airport Line and Lize Business District-Financial Street are directly connected to the fifth line. , Beijing’s Lizetian Street radiates not only a large number of business clients and high-quality families, but also a steady stream of business travelers in the future. This new combination of high-quality urban clients will bring Beijing’s Lizetian Street A more special positioning. It is reported that the business philosophy of Beijing Lize Tianjie is to bring consumers a high-quality lifestyle. Most of the brands that have settled in Beijing Lizetian Street have implemented high-end product line layouts or built special scene stores to present a better brand image. For example, ZARA brought the first shopping mall image store, Chow Tai Fook brought Beijing exclusive “gift” theme experience store, Swarovski opened a new retail concept store-Crystal Studio, in addition, Haima, Sisyph, Vientiane Studios, Box Brands such as Ma Xiansheng, Jidu Moisture, TONI&GUY, Neiyan Yoga, and Lihe Fitness also constitute a combination of brands that co-create lifestyle scenes. In terms of catering layout, Beijing Lizetian Street has fully considered the richness of business combinations and the quality of the overall atmosphere, and has assembled a number of high-quality, high-traffic catering brands, such as the introduction of Xiaodadong Blues Beijing Image Upgrade Store, Hey Tea The latest image store, Tim Hortons flagship image “Golden Maple Store” and many other high-quality catering and popular brands, satisfying the gathering options of different scenes such as business, girlfriends, parent-child, etc., make the dining scene more diverse and rich. In addition to the brand portfolio, Beijing Lizetian Street will also focus on label elements such as “fun, art, fashion”, link high-quality IP resources, and jointly create fun exhibitions, art exhibitions and other activities to present a new urban lifestyle scene. Among them, the first national exhibition of the LABUBU sprite art series jointly created by Beijing Lizetian Street and Bubble Mart will be unveiled on April 16. The national first exhibition of the LABUBU sprite art series has designed AR interactive photography, star cafes, etc. Multiple immersive interactive check-in points will enable consumers to be on the spot and explore their hidden talents. In addition, Beijing Lizetian Street, Today Art Museum and Houlang Publishing House jointly create an art theme area “What kind of life do you want to live” At the same time, it will also work with the “Future Garden”, a derivative brand of the Beijing International Flower Design Festival, to use fashionable and vigorous flower installations to satisfy the endless reverie of the future scene space.

The reporter learned that Beijing Lizetian Street has a commercial building area of ​​92,000 square meters, consisting of 5 floors above ground and 2 floors underground. Up to now, the investment promotion rate of the project has reached 100%, and nearly 200 brands have settled in. Nearly half of the brand stores are concept stores, customized stores, and image stores, including Michelin-starred restaurants, life aesthetics experience halls, new retail smart stores, International fashion designer brand. Lize Financial Business District is the first “five-line transfer” area in the Beijing subway plan. It serves as a direct connection to Metro Line 11, Line 14, Line 16, Daxing International Airport Line and Lize Business District-Financial Street. At the intersection of lines, Beijing’s Lizetian Street radiates not only a large number of business customers and high-quality families, but also a steady stream of business travelers in the future. This new combination of high-quality urban customers will give Beijing Lize Tianjie brings a more special positioning. It is reported that the business philosophy of Beijing Lize Tianjie is to bring consumers a high-quality lifestyle. Most of the brands that have settled in Beijing Lizetian Street have implemented high-end product line layouts or built special scene stores to present a better brand image. For example, ZARA brought the first shopping mall image store, Chow Tai Fook brought Beijing exclusive “gift” theme experience store, Swarovski opened a new retail concept store-Crystal Studio, in addition, Haima, Sisyph, Vientiane Studios, Box Brands such as Ma Xiansheng, Jidu Moisture, TONI&GUY, Neiyan Yoga, and Lihe Fitness also constitute a combination of brands that co-create lifestyle scenes. In terms of catering layout, Beijing Lizetian Street has fully considered the richness of business combinations and the quality of the overall atmosphere, and has assembled a number of high-quality, high-traffic catering brands, such as the introduction of Xiaodadong Blues Beijing Image Upgrade Store, Hey Tea The latest image store, Tim Hortons flagship image “Golden Maple Store” and many other high-quality catering and popular brands, satisfying the gathering options of different scenes such as business, girlfriends, parent-child, etc., make the dining scene more diverse and rich. In addition to the brand portfolio, Beijing Lizetian Street will also focus on label elements such as “fun, art, fashion”, link high-quality IP resources, and jointly create fun exhibitions, art exhibitions and other activities to present a new urban lifestyle scene. Among them, the first national exhibition of the LABUBU sprite art series jointly created by Beijing Lizetian Street and Bubble Mart will be unveiled on April 16. The national first exhibition of the LABUBU sprite art series has designed AR interactive photography, star cafes, etc. Multiple immersive interactive check-in points will enable consumers to be on the spot and explore their hidden talents. In addition, Beijing Lizetian Street, Today Art Museum and Houlang Publishing House will jointly create the art theme area of ​​”What kind of life do you want to live”. At the same time, it will also work with the Beijing International Flower Design Festival’s derivative brand “Future Garden” to create a fashionable and energetic The flower planting device satisfies the endless reverie of the future scene space of the consumers. Source: Beijing Daily Client | Reporter Ma Jing Editor: Wang Qiong Process Editor Wu Yue