Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the chaty domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Deprecated: Return type of Recursive_ArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 76

Deprecated: Return type of Recursive_ArrayAccess::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 89

Deprecated: Return type of Recursive_ArrayAccess::offsetSet($offset, $data) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 103

Deprecated: Return type of Recursive_ArrayAccess::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 125

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Deprecated: Return type of Recursive_ArrayAccess::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 165

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Deprecated: Return type of Recursive_ArrayAccess::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 187

Deprecated: Return type of Recursive_ArrayAccess::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 176

Deprecated: Return type of Recursive_ArrayAccess::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 202

Warning: Cannot modify header information - headers already sent by (output started at /home1/express/public_html/wp-includes/functions.php:6131) in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-emd-wp-session.php on line 134

Deprecated: Creation of dynamic property ReduxFramework::$core_instance is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-args.php on line 202

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Deprecated: Creation of dynamic property NewfoldLabs\WP\Module\ComingSoon::$container is deprecated in /home1/express/public_html/wp-content/plugins/wp-plugin-hostgator/vendor/newfold-labs/wp-module-coming-soon/includes/coming-soon.php on line 17

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Deprecated: Creation of dynamic property Redux_Select::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Select::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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Deprecated: Creation of dynamic property Redux_Slides::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Slides::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Slides::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Textarea::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Textarea::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

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قطرات كورونا.. كيف يعيش الفيروس على الأسطح ويظل معديا لأيام؟ - Algerian Express

قطرات كورونا.. كيف يعيش الفيروس على الأسطح ويظل معديا لأيام؟


Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /home1/express/public_html/wp-content/themes/jannah/framework/functions/post-functions.php on line 761

الجيريان اكسبرس: منذ بدايات أزمة كورونا، انصبت جهود علمية غزيرة على أبحاث تهدف إلى فهم قدرات الفيروس في البقاء معديا على الأسطح، حيث يمكن أن يفيد ذلك كثيرا في مكافحة الوباء، فيما لا تزال هذه الجهود جارية حتى الآن.

ومؤخرا توصلت دراسة حديثة إلى أن فيروس كورونا المستجد الذي يخرج مع رذاذ المصابين، يمكن أن يظل معديا وينتقل عبر الأسطح “لعدة أيام”، من خلال التحول إلى شكل مجهري يشبه “الفطيرة”، حسب ما كشفه أستاذان متخصصان في نماذج الكمبيوتر والفيزياء.

وذكر الأستاذان أميت أغراوال وراجنيش باردواج في المعهد الهندي للتكنولوجيا، أنهما استخدما نماذج الكمبيوتر والفيزياء لفهم كيف يمكن لقطرات الرذاذ التي تحتوي على فيروس كورونا، أن تنشر المرض.

ووجد العالمان أن القطرات المحتوية على الفيروس، تستقر على الأسطح ويمكن أن تبقى معدية لعدة أيام، بناء على نظريتهما.

وتقول الدراسة إنه “رغم تبخر الماء الموجود في الفيروس في غضون دقائق وتحوله الميكروب إلى شكل مجهري، فإن الفيروس يعيش في طبقة واقية من سائل متبقّ”.

وتابعت: “هذه الطبقة يبلغ سمكها نانومتر واحد فقط، وتبقى مستقرة على السطح”.

وكشف أغراوال وباردواج أن الفيروس قد يتلاشى بالكامل، لكن ذلك يحدث اعتمادا على نوع المادة التي استقر عليها.

ففي حال “سقطت القطرات التي تحتوي على الفيروس على الفولاذ المقاوم للصدأ أو النحاس، فإن الفيروس سيعيش ما بين 16 و24 ساعة، لكنه يمكن أن تعيش لأكثر من 150 ساعة على مادة البولي بروبيلين، و80 ساعة على الزجاج”.

وختما الأستاذان دراستهما بالقول إن “هذه الأرقام تستند إلى تجارب أجريت في ظروف معملية ومن المحتمل أن تكون أقل في الواقع، حيث تتغير درجة الحرارة وحركة الهواء، وهي عوامل تعزز التبخر”.

 

 Algerian Express/الجزائر/اخبار الجزائر/امريكا/اخبار امريكا

 

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