国产亚洲第一精品综合Av_噪聲污染對健康有哪些危害_深圳市華美佳環(huán)?？萍加邢薰?/title> <meta name="keywords" content="噪聲污染對健康有哪些危害"> <meta name="description" content="噪聲失眠癥居住在一棟面臨早市街的人群中調查，80%的男人和74%的女人患有失眠癥。失眠者每晚最多睡5小時(shí)，少的只睡2小時(shí)。調查發(fā)現，這里的早市規定從5點(diǎn)—7點(diǎn)，但實(shí)際上從3點(diǎn)半就開(kāi)始來(lái)人占位置，4點(diǎn)即開(kāi)始吵鬧；居民樓內的噪聲最高達60—70分貝。所以這里的人自早市建立5年來(lái)，幾乎都患上了失眠癥。專(zhuān)家指出：噪聲超..."> <link type="text/css" href="style/style.css" rel="stylesheet" /> <link href="style/ddlevelsmenu-base.css" rel="stylesheet" type="text/css"> <script type="text/javascript" src="js/function.js"></script> <script type="text/javascript" src="js/ddlevelsmenu.js"></script> <script type="text/javascript"> ddlevelsmenu.setup("ddtopmenubar", "topbar") //ddlevelsmenu.setup("mainmenuid", "topbar|sidebar") </script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <h1><a 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face=Verdana>　　居住在一棟面臨早市街的人群中調查，80%的男人和74%的女人患有失眠癥。失眠者每晚最多睡5小時(shí)，少的只睡2小時(shí)。調查發(fā)現，這里的早市規定從5點(diǎn)—7點(diǎn)，但實(shí)際上從3點(diǎn)半就開(kāi)始來(lái)人占位置，4點(diǎn)即開(kāi)始吵鬧；居民樓內的噪聲最高達60—70分貝。所以這里的人自早市建立5年來(lái)，幾乎都患上了失眠癥。專(zhuān)家指出：噪聲超過(guò)50分貝就會(huì )影響睡眠和休息。長(cháng)期生活在這種環(huán)境中就會(huì )得噪聲失眠癥。</FONT></P><FONT face=Verdana> <P><BR>　　噪聲性神經(jīng)衰弱</P> <P>　　一條步行美食街沒(méi)有車(chē)水馬龍干擾，多半樓下是門(mén)市，樓上是居室。地段醫生發(fā)現，這里許多人患頭昏、腦脹、耳鳴、失眠、全身疲乏無(wú)力以及記憶力減退等神經(jīng)衰弱癥狀。調查發(fā)現，這里由于有許多炊事機器和烹飪所產(chǎn)生的噪聲可持續在70分貝左右。70分貝以上的噪聲就會(huì )干擾談話(huà)，造成心煩意亂，影響休息和睡眠。休息和睡眠是人們消除疲勞、恢復體力和維持健康的必要條件。噪聲使人不得安寧，大腦興奮不止，久而久之，就會(huì )得神經(jīng)衰弱癥。</P> <P>　　噪聲性聽(tīng)覺(jué)疲勞</P> <P>　　噪聲對人體最直接的危害是聽(tīng)力損傷。人們在進(jìn)入強噪聲環(huán)境時(shí)，暴露一段時(shí)間，會(huì )感到雙耳難受，甚至會(huì )出現頭痛等感覺(jué)。離開(kāi)噪聲環(huán)境到安靜的場(chǎng)所休息一段時(shí)間，聽(tīng)力就會(huì )逐漸恢復正常。這種現象叫做暫時(shí)性聽(tīng)閾偏移，又稱(chēng)聽(tīng)覺(jué)疲勞。這是較輕的聽(tīng)力損傷，是可以逆轉的。</P> <P>　　噪聲性耳聾</P> <P>　　據臨床醫學(xué)統計，若在80分貝以上噪聲環(huán)境中生活，可以引起耳部的不適、耳鳴、耳痛、聽(tīng)力損傷，造成耳聾者可達50%。如果人們長(cháng)期處在90分貝以上的噪聲環(huán)境中，聽(tīng)覺(jué)疲勞不能得到及時(shí)恢復，且內耳器官會(huì )發(fā)生器質(zhì)性病變，即形成永久性聽(tīng)閾偏移，又稱(chēng)噪聲性耳聾。據測定，超過(guò)115分貝的噪聲幾乎不可避免地會(huì )造成耳聾。</P> <P>　　暴震性耳聾</P> <P>　　若人突然暴露于極其強烈的噪聲環(huán)境中，聽(tīng)覺(jué)器官會(huì )發(fā)生急劇外傷，引起鼓膜破裂出血，迷路出血，螺旋器從基底膜急性剝離，可能使人耳完全失去聽(tīng)力，即出現暴震性耳聾。</P> <P>　　噪聲禍及嬰兒</P> <P>　　噪聲對兒童身心健康危害更大。因兒童發(fā)育尚未成熟，各組織器官十分嬌嫩和脆弱，不論是腹內的胎兒還是剛出世的嬰兒，噪聲均可損傷聽(tīng)覺(jué)器官，使聽(tīng)力減退或喪失。據統計，當今世界上有7000多萬(wàn)耳聾者，其中相當部分是由噪聲所致。專(zhuān)家研究已經(jīng)證明，家庭室內噪聲是造成兒童聾啞的主要原因，若在85分貝以上噪聲中生活，耳聾者可達5%。</P> <P>　　噪聲損害視力</P> <P>　　噪聲不僅影響聽(tīng)力，其實(shí)噪聲還影響視力。試驗表明：當噪聲強度達到90分貝時(shí)，人的視覺(jué)細胞敏感性下降，識別弱光反應時(shí)間延長(cháng)；噪聲達到95分貝時(shí)，有40%的人瞳孔放大，視覺(jué)模糊；而噪聲達到115分貝時(shí)，多數人的眼球對光亮度的適應都有不同程度的減弱。所以長(cháng)時(shí)間處于噪聲環(huán)境中的人很容易發(fā)生眼疲勞、眼痛、眼花和視物流淚等眼損傷現象。同時(shí)，噪聲還會(huì )使色覺(jué)、視野發(fā)生異常。調查發(fā)現噪聲可致對紅、藍、白三色視野縮小80%。所以駕駛員應避免立體音響的噪聲干擾，不然易造成行車(chē)事故。</P> <P>　　噪聲誘發(fā)高血壓</P> <P>　　調查1101名紡織女工，高血壓發(fā)病率為7.2%，其中接觸強度達100分貝噪聲者，高血壓發(fā)病率達15.2%。對某鋼鐵冶金企業(yè)1694名男性工人(噪聲暴露1225例，對照469例)調查研究，結果高血壓的患病率在噪聲暴露組為13.31%，明顯高于對照組(7.88%)，兩組比較，差異有顯著(zhù)性。結論：噪聲暴露可能是高血壓發(fā)病的危險因素，降低作業(yè)現場(chǎng)噪聲，可能是降低冶金企業(yè)工人高血壓發(fā)病的有效措施。隨累積噪聲暴露量水平的增高，高血壓患病率有增高的趨勢。</P> <P>　　噪聲損害心血管</P> <P>　　噪聲是心血管疾病的危險因子，噪聲會(huì )加速心臟衰老，增加心肌梗塞發(fā)病率。醫學(xué)專(zhuān)家經(jīng)人體和動(dòng)物實(shí)驗證明，長(cháng)期接觸噪聲可使體內腎上腺分泌增加，從而使血壓上升，在平均70分貝的噪聲中長(cháng)期生活的人，可使其心肌梗塞發(fā)病率增加30%左右，特別是夜間噪音會(huì )使發(fā)病率更高。調查發(fā)現，生活在高速公路旁的居民，心肌梗塞率增加了30%左右。</P> <P>　　噪聲性消化功能障礙</P> <P>　　噪聲也可導致消化系統功能紊亂，胃腸液分泌減少，蠕動(dòng)減慢，食欲下降；引起消化不良、食欲不振、惡心嘔吐，使腸胃病和潰瘍病發(fā)病率升高。</P> <P>　　噪聲引發(fā)精神錯亂</P> <P>　　噪聲超過(guò)85分貝，會(huì )使人感到心煩意亂，無(wú)法專(zhuān)心地工作，工作效率降低。高噪聲的工作環(huán)境，可使人出現頭暈、頭痛、失眠、多夢(mèng)、全身乏力、記憶力減退以及恐懼、易怒、自卑甚至精神錯亂等精神障礙，以至事故率升高。在日本，曾有過(guò)因為受不了火車(chē)噪聲的刺激而精神錯亂，最后自殺的例子。</P> <P>　　噪聲引起內分泌紊亂</P> <P>　　表現為甲狀腺機能亢進(jìn)，腎上腺皮質(zhì)功能增強，性機能紊亂，月經(jīng)失調等。</P> <P>　　噪聲性流產(chǎn)</P> <P>　　國外曾對某個(gè)地區的孕婦普遍發(fā)生流產(chǎn)和早產(chǎn)作了調查，結果發(fā)現她們居住在一個(gè)飛機場(chǎng)的周?chē)?，禍首正是飛機起飛降落時(shí)所產(chǎn)生的巨大噪聲。我國專(zhuān)家也曾在哈爾濱、北京和長(cháng)春等7個(gè)地區經(jīng)過(guò)為期3年的系統調查，結果發(fā)現噪聲不僅能使女工患噪聲聾，且對女工的月經(jīng)和生育均有不良影響。另外可導致孕婦流產(chǎn)、早產(chǎn)，甚至可致畸胎。女性受噪聲的威脅，可導致女性性機能紊亂，對婦女生育能力、內分泌功能、月經(jīng)周期等均有不良影響。</FONT></P> </div> <div style="margin-top:10px;"> 上一條： <a href="News_detail.asp?id=22" title="我公司承接惠州機場(chǎng)噪聲治理項目的設計，環(huán)評中標" >我公司承接惠州機場(chǎng)噪聲治理項目的設計，環(huán)評中標</a></div><div> 下一條： <a href="News_detail.asp?id=11" title="嚴控中高考期間噪聲污染" >嚴控中高考期間噪聲污染</a> </div></td> </tr> </table></td> </tr> </table> <table width="986" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td height="94" align="center" background="images/Index_30.jpg" class="bottom">版權所有：深圳市華美佳環(huán)?？萍加邢薰尽?a target="_blank" rel="nofollow">粵ICP備18080608號</a>　網(wǎng)站建設：闊步網(wǎng)絡(luò )　<a href="http://www.sjdhhs.com" title="噪聲治理" target="_blank">噪聲治理</a><br /> 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