A study of college students has shown that critical skills related to attention, memory, and learning are impaired among people who use marijuana heavily, even after discontinuing its use for at least 24 hours. Researchers compared 65 heavy users, who had smoked marijuana a median of 29 of the past 30 days, and 64 light users, who had smoked a median of 1 of the past 30 days. After a closely monitored 19- to 24-hour period of abstinence from marijuana and other illicit drugs and alcohol, the undergraduates were given several standard tests measuring aspects of attention, memory, and learning.

Research also indicates that some users might turn to other drugs to alleviate some of the negative effects of anabolic steroids. For example, a study of 227 men admitted in 1999 to a private US treatment centre for dependence on heroin or other opioids found that 9.3 percent had abused anabolic steroids before trying any other illicit drug. Of these 9.3 percent, 86 percent first used opioids to counteract insomnia and irritability resulting from the anabolic steroids. [2]

When used regularly in medium to high doses, laughing gas can lead to nerve damage as it reduces the effectiveness of Vitamin B12 which normally helps protect the nerves. This damage may lead to motor disorders which cause tingling and numbness in the limbs. The use of laughing gas can cause long term damage to the brain cells if oxygen deficiency occurs too often while using it.
قد يكون هناك ما يسمى الادمان النشط، وهو تطور طبيعي أثناء مراحل العلاج، لكن خلال إعادة تأهيل مدمنى المخدرات يحرص الفريق الطبي المتابع للحالة أن تكون هناك ملاحظة دائمة، خاصة لأن مرحلة سحب السموم من الجسم تعد أخطر المراحل التى تستدعي ذلك، نظرًا لخطورة الأعراض الانسحابية الناتجة عنها، ومن هنا لابد من إيقاف ما يسمى "الادمان النشط" الذى قد يفاقم المشكلة الادمانية لدى الشخص المدمن.
لو لم يكن لدينا إلا برنامج واحد ننصحكم بتحميله لأطفالكم لتعليمهم أساسيات اللغة العربية والانجليزية والحساب ، فإننا ننصحكم بهذا البرنامج المميز بحق ، برنامج تعليم الحروف والأرقام عبر الهاتف من أفضل البرامج التعليمية والشاملة للصغار ، يعرض التطبيق كافة المهارات الخاصة بتعلم الحروف العربية والانجليزية والأرقام بشكل جذاب وشائق ومميز ، وعبر آلية يتسنى للطفل التعرف فيها على النطق الصحيح والسليم والواضح للحروف والأرقام ، يتم تعليم الطفل مهارات الحساب الأساسية كالجمع والطرح والقسمة والضرب بالاضافة للعد التصاعدي والتنازلي من خلال ألعاب تعليمية مميزة وهادفة لتلقين الطفل الأساسيات كجدول الضرب وغيرها من الأمور وكل ذلك دون وجود الاتصال بالانترنت .
دور العائلة من أبرز الأدوار التي تساهم في مواجهة التحديات التي تواجه علاج الادمان ، فى العائلة هي الحصن الأول الذي يحافظ على المدمن وعلى آثار علاج الادمان ، فتقبل العائلة للمدمن من أبرز العوامل التي تمهد للنجاح فى علاج الادمان حيث أن مراحل العلاج تتطلب مساندة العائلة مساندة حقيقية في الانتكاسة واردة في مراحل العلاج ، فلابد أن يكون هناك دعم ملاصق للمدمن حتى يدعمه ليكمل علاجه ويستمر فيه ..
هي الموجات التي تزيد تردداتها على 20 ألف هيرتز والتي تقع خارج نطاق حاسة الاذن البشرية. وهذا النوع من الموجات ما زال موضع بحث واهتمام مكثف نظرا للتطبيقات المهمة التي تمس مجالات عديدة في الصناعة والطب وغيرهما. وقد أصبح بالإمكان إنتاج موجات فوق صوتية تزيد تردداتها على 1.000.000 هيرتز ولا تختلف هذه الموجات من حيث الخواص عن الموجات الصوتية الأخــرى إلا أنه نظرا لقصر طول موجاتها فإنه بالإمكان تنتقل على هيئة أشعة دقيقة عالية الطاقة.
أثناء هذه السنوات فى تدخين الحشيش والخمرة كنت أسمع عن البرشام و أدوية الكحة المخدرة و لكني كنت أنظر باحتقار لهؤلاء الذين يستخدموا هذه الأشياء لأنها ليس على المستوى، وأنهم ناس بيئة. ولكني بعد سنوات قليلة بدأت في تجربة البرشام ووجدت أنها دماغ روشة جداً وإني مختلف حتى في استقبالي لهذه المخدرات فأنا أتعاطاها ولكن بمستوى خاص وبأسلوب راقي. في هذه الفترة بدأت المغامرة تأخذ شكلاً أكبر في حياتي. بدأت السرقة مع أصدقائي بأسلوب منظم ومنتظم. سرقنا الكماليات الداخلية للسيارات مثل الكاسيت والسماعات وأجهزة الصوت أو أي شيء يوجد داخل السيارات. وأصبح التجمع بشكل يومي، فنقوم بتعاطي البرشام المخدر ثم نبحث عن السيارات في المناطق الهادئة ونقوم بكسر الهواية لفتح السيارة وسرقتها. كانت المغامرة في شدتها لأننا كنا نعلم أن الشرطة تبحث عنا و تريد القبض علينا. كنا نحاول تضليلهم بطرق عديدة و أساليب مختلفة ثم نستمتع بنجاحنا بشرب المخدرات والسهر والفلوس والبنات. ولكن بعد وقت ليس بكثير تم القبض علينا في تشكيل عصابي لسرقة محتويات السيارات.
First, Duncan deposited heat into the graphite sample using two crossed laser beams to create an interference pattern—alternating bright and dark regions that correspond to crests and troughs in the colliding waves of light. At the outset, the crests heated up the graphite while the troughs remained cool. But once Duncan switched off the lasers, the pattern would begin to slowly diminish as heat flowed from the hot crests to the cool troughs. The experiment would reach its end once the entire sample reached a uniform temperature. Or at least that is what typically happens. But when the lasers stopped shining, the graphite had other plans, continuing to allow the heat to flow until the hot crests became cooler than the troughs. This is rather like a stove top that becomes ice-cold the instant you turn it off rather than gradually cooling to ambient temperature. “That’s weird,” Nelson says. “Heat isn’t supposed to do that!”
تدخل الموجات الصوتية إلى الأذن بعد أن يقوم الصيوان بتجميعها، ثم تمر عبر القناة السمعية الخارجية (الصورة:gg) إلى الطبلة (الصورة:tf) التي تحولها إلى اهتزازات تنتقل إلى المطرقة (الصورة:h) فالسندان (الصورة:a) فالركاب (الصورة:s) وثم إلى القوقعة التي يؤدي اهتزاز القناتين السمعية (الصورة:tht) والدهليزية (الصورة:vht) فيها إلى توليد سلسلة من الذبذبات تنتقل بواسطة العصب السمعي إلى المخ بصورة سيالات عصبية، حيث تترجم هناك إلى أصوات نسمعها.
أدركت أنني في مشكلة كبيرة ولا أستطيع حلها وحدي. و قررت أن أذهب لأختي الكبرى و اعترفت لها إني عندي مشكلة كبيرة مع الإدمان وأريد منها المساعدة. وبالفعل قامت أختي باتصالات عديدة حتى أخذت لي موعد مع دكتور متخصص في الإدمان. ذهبت إليه وكنت أتعاطى الهيروين قبل أن أذهب إليه، وكنت أشتري هيروين بفلوس الكشف التي كانت أختي تعطيني إياها. وبعد الجلسة كنت أقول له أنا متأسف أنا نسيت أحضر الفلوس وكان يبتسم فى وجهي و يقول لي ما فيش مشكلة. وتقبلني هذا الدكتور، ثم حولني الى مستشفى لأقضي أعراض السحب. وكان يزورني بصفة مستمرة، وأيضاً قام بزيارتي شخص آخر عرفني بنفسه وقال لي أنه مدمن متعافي وقضى حياته كلها في الأدمان وهو حاليًا متوقف عن جميع أنواع المخدرات لمدة أكثر من أربع سنوات.

And for the most part, it does not. Second sound was first detected in liquid helium 75 years ago and later seen within three solids. “All indications early on were that this was something that would really be confined to very few materials and only at very low temperatures,” Nelson says. As such, scientists thought they had hit the end of the road. “It wasn’t super clear what [second sound] could be apart from a scientific statement,” says Nicola Marzari, a materials scientist at the Swiss Federal Institute of Technology, in Lausanne, who was not involved in this study. “So, the entire field went dormant for many years.”


Magic mushrooms can make you feel nauseated, tired and disorientated. One can also have ?bad trip? which is a frightening experience during which the user will experience severe anxiety or paranoia. There?s no way to tell if a particular use of magic mushrooms will be a bad or good trip and there?s no way of going back other than waiting for the effects to wear off. As a hallucinogen, you?re not always aware and in complete control of what you do, which could cause you to do or get involved in dangerous situations.

Laughing gas is available several forms, one being the medical form which is produced to be used as an anaesthetic and is therefore subject to pharmaceuticals law. A second, less pure form of laughing gas is for commercial use and is commonly used to tune engines. This less pure form may often contain other chemicals or gases such as methyl nitrate which can lead to oxygen deficiency in the human body. Laughing gas can also be purchased in cartridges that can be used to make whipped cream.
Whether it’s through the legendary heritage of Denon, the classic American strength of Polk Audio, the premium performance and minimalist cool of Definitive Technology, the highly-sought-after amplification and pedigree of Marantz, the action-inspired form factors of Polk BOOM, the wireless home audio solutions of HEOS, or the accessible performance of Boston Acoustics, everyone will find their sound here… however they want to enjoy it.
Sensations and feelings change much more dramatically than the physical signs. The user may feel several different emotions at once or swing rapidly from one emotion to another. If taken in a large enough dose, the drug produces delusions and visual hallucinations. The user’s sense of time and self changes. Sensations may seem to cross over, giving the user the feeling of hearing colours and seeing sounds. These changes can be frightening and can cause panic.

Integrators and developers building services, apps, and devices across markets and verticals (e.g. telecoms, utilities, manufacturing, OEM, finance, etc.), benefit from adding speech output to services and applications. Text to speech enables a wider-reaching, more consumer-oriented end-user experience, helping reduce costs and increasing automation while providing personalized customer interactions.

Methamphetamine is taken orally or intranasally (snorting the powder), by intravenous injection, and by smoking. Immediately after smoking or intravenous injection, the methamphetamine user experiences an intense sensation, called a rush or flash, that lasts only a few minutes and is described as extremely pleasurable. Oral or intranasal use produces euphoria – a high, but not a rush. Users may become addicted quickly, and use it with increasing frequency and in increasing doses.


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When addicted individuals stop using cocaine, they often become depressed. This also may lead to further cocaine use to alleviate depression. Prolonged cocaine snorting can result in ulceration of the mucous membrane of the nose and can damage the nasal septum enough to cause it to collapse. Cocaine-related deaths are often a result of cardiac arrest or seizures followed by respiratory arrest.
Methamphetamine is taken orally or intranasally (snorting the powder), by intravenous injection, and by smoking. Immediately after smoking or intravenous injection, the methamphetamine user experiences an intense sensation, called a rush or flash, that lasts only a few minutes and is described as extremely pleasurable. Oral or intranasal use produces euphoria – a high, but not a rush. Users may become addicted quickly, and use it with increasing frequency and in increasing doses.
healthy, sound, wholesome, robust, hale, well mean enjoying or indicative of good health. healthy implies full strength and vigor as well as freedom from signs of disease. a healthy family sound emphasizes the absence of disease, weakness, or malfunction. a sound heart wholesome implies appearance and behavior indicating soundness and balance. a face with a wholesome glow robust implies the opposite of all that is delicate or sickly. a lively, robust little boy hale applies particularly to robustness in old age. still hale at the age of eighty well implies merely freedom from disease or illness. she has never been a well person
MDMA also is related in its structure and effects to methamphetamine, which has been shown to cause degeneration of neurons containing the neurotransmitter dopamine. Damage to these neurons is the underlying cause of the motor disturbances seen in Parkinson’s disease. Symptoms of this disease begin with lack of coordination and tremors and can eventually result in a form of paralysis.

Methamphetamine is taken orally or intranasally (snorting the powder), by intravenous injection, and by smoking. Immediately after smoking or intravenous injection, the methamphetamine user experiences an intense sensation, called a rush or flash, that lasts only a few minutes and is described as extremely pleasurable. Oral or intranasal use produces euphoria – a high, but not a rush. Users may become addicted quickly, and use it with increasing frequency and in increasing doses.
Laughing gas is available several forms, one being the medical form which is produced to be used as an anaesthetic and is therefore subject to pharmaceuticals law. A second, less pure form of laughing gas is for commercial use and is commonly used to tune engines. This less pure form may often contain other chemicals or gases such as methyl nitrate which can lead to oxygen deficiency in the human body. Laughing gas can also be purchased in cartridges that can be used to make whipped cream.
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