atmosfera havosi quyosh radiatsiyasi va ishlab chiqarish mikroiklimini gigienik ahamiyati

DOC 59,5 KB Bepul yuklash

Sahifa ko'rinishi (5 sahifa)

Pastga aylantiring 👇

1522392900_70458.doc atmosfera havosi quyosh radiatsiyasi va ishlab chiqarish mikroiklimini gigienik ahamiyati reja: 1. atmosfera bosimi 2. kimyo–farmatsevtika korxonalarida mikroiqlimga qo’yilgan gigiyenik talablar. 3. kimyo–farmatsevtika korxonalarida salbiy omillar: shovqin, tebranish, ultratovush. atmosfera bosimi atmosfera bosimi. yer yuzasi ustidagi havo qatlami 1000 km balandlikkacha ko’tariladi. ushbu havo yer satxida yer tortishish kuchi bilan ushlab turiladi, ya’ni muayyan vaznga ega. yer yuzasiga va undagi barcha buyumlarga ushbu havo 1033 g/sm ga teng bosim beradi. tegishlicha, odam tanasining butun yuzasiga (1,6-1,8 kv m. maydon) 16-18 tonnaga teng bosim tushadi. odatda biz uni sezmaymiz, chunki gazlar organizmdagi suyuqlik va to’qimalarda xuddi shu bosimda erigan bo’ladi va ichkaridan tana yuzasiga beriladigan tashqi bosimni muvozanatlaydi. ammo tashqi atmosfera bosimi iqlim sharoitlari tufayli o’zgarganda uni ichkaridan muvozanatlash uchun organizmda erigan gazlar miqdorini oshirish yoki kamaytirish uchun qanchadir vaqt kerak bo’ladi. bu vaqt ichida odam o’zini biroz noqulay sezishi mumkin, chunki atmosfera bosimi bir necha mm simob ustuniga o’zgarganda …

sabati bilan undagi kislorodning partsial bosimi, ya’ni umumiy bosimda kislorod tomonidan ta’minlanadigan bosim ulushi kamayadi. aynan shu kislorodning partsial bosimi uislorodning alveolalardagi havodan venoz qonga o’tishini (diffuziyasini) ta’minlar ekan. aniqrog’i, bunday o’tish kislorodning venoz qondagi va alveolyar havodagi partsial bosimi farqi hisobiga yuz beradi. ushbu farq diffuz bosim deb ataladi. diffuz bosim kam bo’lganda qonning o’pkada qilorod bilan to’yinishi qiyinlashadi, gipoksemiya yuz beradi, balandlik va tog’ kasalliklarining asosiy omili ham mana shu holat bilan bog’liq. bunday kasalliklarning umumiy belgilari: nafas olishning qiyinlashishi, yurakning tez-tez urishi, teri qoplamalarining oqarib ketishi va akrotsianoz, bosh aylanishi, kamquvvatlik, tez charchash, ko’ngil aynishi, qayd qilish, xushdan ketish. bunday kasalliklarning dastlabki alomatlari 3-4 km balandlikda paydo bo’la boshlaydi. kislorodning havodagi partsial bosimiga bog’liq holda turli balandliklarda quyidagi zonalar ajratiladi (odam organizmiga ta’siriga ko’ra): 1. indefferent zona 2 km gacha 2. to’liq kompensatsiya zonasi 2-4 km 3. to’liq bo’lmagan kompensatsiya zonasi 4-6 km 4. kritik zona 6-8 …

klar jarohatlanadi, burundan qon ketadi va h.k. bosimning 47 mm simob ustuniga va undan ham pasayib ketishi (19 km balandlikda) shunga olib keladiki, organizmdagi suyuqliklar tana haroratidayoq qaynab ketadi, chunki bu haroratda bosim suv bug’lari bosimidan past bo’lib qoladi. bu teri osti esfizemasi ko’rinishida o’z ifodasini topadi. yuqori bosim ta’siri suv ostidagi ishlarni va kesson ishlarini odam yuqori bosimda bajarishga majbur. sog’lom odamlar baland bosimni og’riqsiz ko’tarishi mumkin. ayrim hollardagina qisqa muddatli noxush hissiyotlar kuzatilishi mumkin. bunda organizmning barcha ichki bo’shliqlaridagi bosimning tashqi bosim bilan muvozanatlashuvi, shuningdek organizmdagi suyuqliklar va to’qimalarda azotning nafas olingan havodagi partsial bosimiga muvofiq erishi yuz beradi. har bir qo’shimcha atmosfera bosimiga organizmda qo’shimcha tarzda 1 litr azot eriydi. yuqori bosimdan normal bosimga o’tish (dekompressiyada) ancha jiddiyroq kechishi mumkin. bunda organizmdagi to’qima suyuqliklarida va qonda erigan azot tashqi muhitga ajralishga intiladi. dekompressiya sekin borsa, azot asta-sekin o’pka orqali diffuziyalanadi va desaturatsiya normal kechadi. biroq dekospressiya tezlashganda …

s serious impacts on health, the most common of which are musculoskeletal disorders (keyserling and armstrong, 1998). for the united states, the lack of attention to ergonomics causes an estimated 250,000 new cases of repeated trauma associated disorders each year (nsc, 2001). although discussions during the past decade would imply that the recognition of such problems is new, in reality it is not. in the previously cited de morbis artificum diatriba, ramazzini noted that a variety of common occupational diseases were caused by prolonged, violent, and irregular motions and prolonged postures (franco, 2001). data show that nearly two-thirds of the illness cases reported among u.s. workers are associated with factors that involve problems of the human-machine interface. overall, it is estimated that approximatelyrepetitive about 25 percent of all injuries in the workplace occur in the process of lifting and moving objects. another 15–20 percent are caused by slips and falls. …

d higher rates of injuries. another pervasive problem is heat stress, especially among workers who wear protective clothing. as body temperature increases, the circulatory system seeks to cool the body by increasing the heart’s pumping rate, dilating the blood vessels, and increasing blood flow to the skin. if these mechanisms do not provide sufficient cooling, the body perspires; the evaporation of sweat will cool the skin and the blood and reduce body temperature. because sweating causes a loss of both water and electrolytes, some form of heat stress, including heatstroke, may develop if the body temperature is not reduced. the degree to which a given worker is affected depends on his/her level of physical activity, the velocity of air movement, the dry-bulb air temperature, and the relative humidity (which influences the effectiveness of perspiration as a mechanism for cooling the body). overall, an estimated 5 million or more u.s. workers …

Ko'proq o'qimoqchimisiz?

Faylni Telegram orqali bepul yuklab oling.

To'liq faylni yuklab olish

"atmosfera havosi quyosh radiatsiyasi va ishlab chiqarish mikroiklimini gigienik ahamiyati" haqida

1522392900_70458.doc atmosfera havosi quyosh radiatsiyasi va ishlab chiqarish mikroiklimini gigienik ahamiyati reja: 1. atmosfera bosimi 2. kimyo–farmatsevtika korxonalarida mikroiqlimga qo’yilgan gigiyenik talablar. 3. kimyo–farmatsevtika korxonalarida salbiy omillar: shovqin, tebranish, ultratovush. atmosfera bosimi atmosfera bosimi. yer yuzasi ustidagi havo qatlami 1000 km balandlikkacha ko’tariladi. ushbu havo yer satxida yer tortishish kuchi bilan ushlab turiladi, ya’ni muayyan vaznga ega. yer yuzasiga va undagi barcha buyumlarga ushbu havo 1033 g/sm ga teng bosim beradi. tegishlicha, odam tanasining butun yuzasiga (1,6-1,8 kv m. maydon) 16-18 tonnaga teng bosim tushadi. odatda biz uni sezmaymiz, chunki gazlar organizmdagi suyuqlik va to’qimalarda xuddi shu bosimda erigan bo’ladi va i...

DOC format, 59,5 KB. "atmosfera havosi quyosh radiatsiyasi va ishlab chiqarish mikroiklimini gigienik ahamiyati"ni yuklab olish uchun chap tomondagi Telegram tugmasini bosing.

Teglar: atmosfera havosi quyosh radiats… DOC Bepul yuklash Telegram