১৯৭৭ সালে ঢাকায় নদী গবেষণা ইনস্টিটিউট প্রতিষ্ঠিত হয়। এটি বাংলাদেশ সরকারের পানি সম্পদ রে অধীনে একটি সংবিধিবদ্ধ সংস্থা যা তিনটি বিভাগের সমন্বয়ে গঠিত (হাইড্রোলিক রিসার্চ, জিওটেকনিক্যাল রিসার্চ অর্থ ও প্রশাসন অধিদপ্তর)। ১৯৮৯ সালে এটি ঢাকা থেকে ফরিদপুরের ভাঙ্গায় স্থানান্তর করা হয়।
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আমাদের অল-ইন-ওয়ান মোবাইল অ্যাপের মাধ্যমে সীমাহীন শেখার সুযোগ উপভোগ করুন।
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1 x Application (66.64%) | 137ms |
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select `_lft`, `_rgt` from `subjects` where `id` = 16104 limit 1
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select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `show_content`, `num_of_mcq`, `num_of_written`, `des_added_by`, `des_updated_by`, `author_name`, `link_subject_id`, `sub_category_id`, `main_category_id`, `slug`, `meta_og_title`, `meta_keyword`, `meta_description`, `vote`, `view_count`, `icon`, `page_type`, `chapter_name` from `subjects` where (`subjects`.`_lft` between 17795 and 17796) and `subjects`.`deleted_at` is null
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select `id`, `description`, `short_description`, `subject_id` from `subject_descriptions` where `subject_descriptions`.`subject_id` in (16104) and `subject_descriptions`.`deleted_at` is null
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select `id`, `user_id`, `completeable_type`, `completeable_id`, `complete_progress`, `is_complete` from `completes` where `completes`.`completeable_id` in (16104) and `completes`.`completeable_type` = 'App\\Models\\Subject'
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select `id`, `name`, `avatar` from `users` where `users`.`id` in (33722) and `users`.`deleted_at` is null
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select * from (select `questions`.`id`, `questions`.`subject_id`, `questions`.`category_id`, `questions`.`sub_category_id`, `questions`.`board_exam_id`, `questions`.`passage_id`, `questions`.`question_type`, `questions`.`question`, `questions`.`is_duplicate`, `questions`.`status`, `questions`.`image`, `subjectables`.`subject_id` as `pivot_subject_id`, `subjectables`.`subjectable_id` as `pivot_subjectable_id`, `subjectables`.`subjectable_type` as `pivot_subjectable_type`, row_number() over (partition by `subjectables`.`subject_id` order by `questions`.`created_at` desc) as `laravel_row` from `questions` inner join `subjectables` on `questions`.`id` = `subjectables`.`subjectable_id` where `subjectables`.`subject_id` in (16104) and `subjectables`.`subjectable_type` = 'App\\Models\\Question' and `questions`.`status` = 'active' and `questions`.`deleted_at` is null) as `laravel_table` where `laravel_row` <= 5 order by `laravel_row`
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select * from `subjects` where `subjects`.`id` = 16104 and `subjects`.`deleted_at` is null limit 1
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select `id`, `name`, `slug`, `parent_id`, `_lft`, `_rgt` from `subjects` where (17796 between `subjects`.`_lft` and `subjects`.`_rgt` and `subjects`.`id` <> 16104) and `subjects`.`deleted_at` is null order by `_lft` asc
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select * from `subjects` where `subjects`.`id` = 16104 and `subjects`.`deleted_at` is null limit 1
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select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `slug`, `meta_og_title`, `meta_keyword`, `meta_description` from `subjects` where `subjects`.`id` = 16101 and `subjects`.`deleted_at` is null limit 1
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select `id`, `description`, `subject_id` from `subject_descriptions` where `subject_descriptions`.`subject_id` in (16101) and `subject_descriptions`.`deleted_at` is null
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select `_lft`, `_rgt` from `subjects` where `id` = 79 limit 1
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select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `name`, `slug`, `icon`, `banner` from `subjects` where (`subjects`.`_lft` between 16791 and 20416) and `subjects`.`deleted_at` is null
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select * from `mediables` where `mediable_type` = 'App\\Models\\Subject' and `mediable_id` in (16104)
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select `id`, `name`, `main_category_id`, `slug` from `subjects` where `id` <> 16104 and `parent_id` = 16101 and `main_category_id` = 3 and `subjects`.`deleted_at` is null limit 5
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