Monday, July 20, 2009
MELAHIRKAN SALEHUDIN AL AYUBI MELALUI MAKANAN HALALAN THOYYIBAN
" Hai sekalian manusia, makanlah yang halal lagi baik dari apa yang terdapat di bumi, dan janganlah kamu mengikuti langkah-langkah syaitan, kerana sesungguhnya syaitan itu adalah musuh yang nyata bagimu ” (Al-Baqarah:168).
Maka dalam ayat di atas jelas kepada kita bahawa Allah swt memerintahkan agar manusia makan makanan yang halal sepertimana yang dituntut ke atas rasul-rasul yang terdahulu. Hal ini dituntut kerana Allah swt hanya akan menerima perkara-perkara yang baik sahaja. Manakala sebaliknya Allah tidak menghiraukan amalan dan juga ibadat orang-orang yang sentiasa mendapatkan rezekinya dari sumber-sumber yang tidak halal.
Dalam kehidupan seharian manusia tidak dapat lari dari persoalan halal dan haram. Dalam apa sahaja ruang-ruang kehidupan di situ ujudnya perkara halal dan haram: makan minum, kekeluargaan, perhubungan, pekerjaan, perniagaan dan sebagainya.
Sempurnakah SOLAT anda selama ini?
Tercapaikah KHUSYUK yang paling sempurna?
Ayuh kita sempurnakan solat seperti Rasulullah.
Thursday, July 2, 2009
HARMFUL ALGAL BLOOMS (HABs)
WHY IS THIS ISSUE IMPORTANT?
A small percentage of algal species cause harm to humans and the environment through toxin production or excessive growth—these are the harmful algae and they include both microalgae (microscopic, single celled organisms) and macroalgae (seaweeds). Some harmful algae produce potent toxins which cause illness or death in humans and marine organisms—fish, seabirds, manatees, sea lions, turtles, and dolphins are some commonly affected animals. Other types of harmful algae are nontoxic to humans but cause harm to fish and invertebrates by damaging or clogging their gills or by forming such large blooms that the death and subsequent decay of the algae lead to hypoxia (oxygen depletion) in the bottom waters of marine environments. Dense blooms can also block sunlight for beneficial algae and seagrasses.
HABs occur naturally, but human activities that disturb ecosystems in the form of increased nutrient loadings and pollution, food web alterations, introduced species, and water flow modifications have been linked to the increased occurrence of some HABs.
A small percentage of algal species cause harm to humans and the environment through toxin production or excessive growth—these are the harmful algae and they include both microalgae (microscopic, single celled organisms) and macroalgae (seaweeds). Some harmful algae produce potent toxins which cause illness or death in humans and marine organisms—fish, seabirds, manatees, sea lions, turtles, and dolphins are some commonly affected animals. Other types of harmful algae are nontoxic to humans but cause harm to fish and invertebrates by damaging or clogging their gills or by forming such large blooms that the death and subsequent decay of the algae lead to hypoxia (oxygen depletion) in the bottom waters of marine environments. Dense blooms can also block sunlight for beneficial algae and seagrasses.
HABs occur naturally, but human activities that disturb ecosystems in the form of increased nutrient loadings and pollution, food web alterations, introduced species, and water flow modifications have been linked to the increased occurrence of some HABs.
HYPOXIA AND NUTRIENT POLLUTION
WHY IS THIS ISSUE IMPORTANT?
Hypoxia is a major concern for many of our nation's waterways. Hypoxia occurs when the amount of dissolved oxygen in water becomes too low to support most aquatic life (typically below 2 mg/l). Most organisms avoid waters that are hypoxic because it can cause physiological stress and impact their growth, reproduction, and survival. If organisms cannot escape, hypoxia can be fatal, reducing overall populations and, in some cases, negatively affecting commercial and recreational harvests of fish and shellfish. While hypoxia can occur naturally, the frequency and intensity of occurrence in coastal areas is increasing, largely due nutrient pollution (such as nitrogen and phosphorus) from human activities. Over half of the U.S. estuaries now experience natural or human-induced hypoxic conditions at some time each year and evidence suggests that the frequency and duration of hypoxic events have increased over the last few decades. The importance and national scale of hypoxia in U.S. waters is evidenced by the recently documented exponential increase in number of coastal systems experiencing hypoxia worldwide and in the US (Diaz & Rosenberg 2008, Science).
Hypoxia is a major concern for many of our nation's waterways. Hypoxia occurs when the amount of dissolved oxygen in water becomes too low to support most aquatic life (typically below 2 mg/l). Most organisms avoid waters that are hypoxic because it can cause physiological stress and impact their growth, reproduction, and survival. If organisms cannot escape, hypoxia can be fatal, reducing overall populations and, in some cases, negatively affecting commercial and recreational harvests of fish and shellfish. While hypoxia can occur naturally, the frequency and intensity of occurrence in coastal areas is increasing, largely due nutrient pollution (such as nitrogen and phosphorus) from human activities. Over half of the U.S. estuaries now experience natural or human-induced hypoxic conditions at some time each year and evidence suggests that the frequency and duration of hypoxic events have increased over the last few decades. The importance and national scale of hypoxia in U.S. waters is evidenced by the recently documented exponential increase in number of coastal systems experiencing hypoxia worldwide and in the US (Diaz & Rosenberg 2008, Science).
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