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Mayday là gì? Nguồn gốc của Mayday

Mayday là một trong những tín hiệu báo nguy hiểm khẩn cấp, được dùng rất phổ biến trong ngày nay. Vậy tại sao người báo tin khẩn cấp không dùng SOS, Help me mà lại dùng Mayday? Và tại sao thông báo khẩn cấp là Mayday mà không phải từ ngữ khác? Bài viết dưới đây sẽ giúp bạn hiểu rõ thông báo Mayday là gì?

Nguồn gốc của Mayday

Mayday cũng giống như tín hiệu khẩn cấp SOS, nhưng khác với đối tượng sử dụng. Maday được áp dụng riêng với đối tượng phi công, thuyền trưởng khi gặp trường hợp khẩn cấp sẽ phát tín hiệu với tổng đài qua vô tuyến. Còn SOS dùng cho tàu thuyền gặp nạn trên biển cần giúp đỡ và cũng được sử dụng ở nhiều trường hợp khác.

Mayday là gì?

Từ Maday xuất phát từ một sĩ quan vô tuyến cao cấp tại Anh đảm nhận nhiệm vụ tìm ra một từ dễ hiểu nhất để tất cả phi công và nhân viên mặt đất sử dụng trong tình huống khẩn cấp vào năm 1923. Lúc đó từ Help đã được nghĩ tới để sử dụng, nhưng nó lại quá phổ biến và dùng cho mọi trường hợp.

Chính vì vậy sĩ quan đó đã dùng từ khác đó là Mayday, đọc chệch đi của thuật ngữ tiếng Pháp venez m’aider có nghĩa là “help me”(Cứu tôi với!). Và năm 1927, Hiệp ước Điện báo vô tuyến quốc tế Washington đã chọn “Mayday” là tín hiệu chính thức trong các cuộc gọi báo tình huống cực kỳ khẩn cấp với mức độ nguy hiểm cao nhất. Ngoài từ Mayday thì từ “pan-pan” được sử dụng thay thế khi cần hỗ trợ, nhưng không ở mức độ khẩn thiết như tín hiệu Mayday.

Sử dụng Mayday

Tín hiệu này luôn được nói ba lần liên tiếp “Mayday Mayday Mayday” để tránh nhầm lẫn với một số câu có âm thanh tương tự trong điều kiện ồn ào. Thông báo đầy đủ của Mayday khi sử dụng đó là Mayday-Mayday- Mayday, tên (hoặc mã hiệu) của chiếc tàu (máy bay) được nói ba lần, Mayday và tên hoặc mã hiệu lần nữa, vị trí, tính huống khẩn cấp, cần sự giúp đỡ như nào và số người trên tàu hay máy bay.

Ví dụ MAYDAY, MAYDAY, MAYDAY, đây là HỒNG HÀ, HỒNG HÀ, HỒNG HÀ. MAYDAY, HỒNG HÀ. Vị trí 54 25 bắc, 016 33 tây. Tàu của tôi đang bị cháy và chìm xuống. Tôi yêu cầu được giúp đỡ ngay. Bốn người đang trên tàu và đang dùng một xuồng cứu hộ. HẾT.

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    Bản quyền bài viết thuộc trường trung học phổ thông Sóc Trăng. Mọi hành vi sao chép đều là gian lận.
    Nguồn chia sẻ: Trường THPT Thành Phố Sóc Trăng (thptsoctrang.edu.vn)

    Nguyễn Thị Hương Thủy

    Cô giáo Nguyễn Thị Hương Thủy tốt nghiệp trường Đại học Sư phạm Hà Nội và hiện đang tham gia giảng dạy môn Ngữ Văn tại trường THPT Chu Văn An. Cô có 20 năm kinh nghiệm giảng dạy, dẫn dắt nhiều thế hệ học sinh đạt những thành tích cao và đặt chân vào các trường đại học danh tiếng. Cô gặt hái được rất nhiều thành công trong sự nghiệp: giải Nhì trong cuộc thi giáo viên giỏi do thành phố Hà Nội tổ chức, tham gia giảng dạy đội tuyển Học sinh giỏi Quốc gia.

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    1. In addition, they allow you to get a full vary of movement each on the
      backside and high of the movement. Try some
      push-ups and squats as we discussed in our power coaching
      part. While you can’t spot cut back fat, you can select to construct
      extra muscle in particular areas, altering your body form.

      I do suggest that you simply do some type of cardio 3-4 instances every week.
      Of course, how a lot, what kind, and the way long every length is determined by
      the place you are at present, and what your objectives
      are. Trainer Cory Gregory, a 45-year-old father
      of three, designed this plan to rework your physique.

      Protein powders are sometimes used to supplement giant amounts of protein between meals.

      Let’s start with the 5 day split that most individuals consider in phrases
      of a 5 day exercise plan – the Standard 5-Day
      Break Up. Whereas one day you prepare decrease pulling and one other you prepare lower pushing, you can’t isolate your quadriceps,
      hamstrings, and glutes when performing compound movements.
      You can target all muscle tissue in per week with comparatively
      shorter, centered periods, making it simpler to keep up consistency and avoid fatigue.
      Plus, the routine permits for top frequency with
      out overtraining any muscle group. For instance, after a “push” workout, your chest and triceps have time to
      recover whilst you focus on your back and biceps on the “pull” day, and your legs get a break on the “legs” day.

      Balancing your coaching helps stop muscular imbalances, which in the end reduces the chance of
      harm and optimizes total strength and muscle growth.

      Compound and isolation actions may be equally
      efficient at leading to muscle hypertrophy in phrases of the best exercise
      sort for muscle constructing. If loading development isn’t attainable, strive for
      a higher number of sets whereas maintaining the
      number of reps unchanged. It won’t be as efficient as load development for constructing power, however
      it will help you build mass. This means you’ll do one set of the primary
      carry, rest, then one set of the second raise, rest once more,
      and repeat till sets are complete. Or you can do a cardio session on your non-weight
      training days. This would let you stick to the true 30-minute
      exercise plan.
      That is, should you prepare on Monday, you’ll have
      Tuesday off, then practice again on Wednesday. Nevertheless, you only have limited funds
      in your recovery account. Overdo the cardio train, and also you might overdraw that account and
      find yourself struggling to recuperate from and adapt to your strength coaching regimen. For the muscle-gain categorical practice, goal for a snack or
      meal rich in protein within an hour or so after your workout.

      As the name suggests, this split entails working out five
      days every week. Whereas it calls for real commitment, it is an excellent alternative when you take pleasure
      in frequent exercises and aim to construct
      muscle and energy. Now you might have a day or push movements between those two challenging lifts,
      allowing for higher restoration to avoid overworking the muscle
      groups involved in each movements. If you practice six days
      per week, you’ll carry out deadlifts and barbell
      squats on consecutive days no matter what, however for the intermediate lifter, that extra day
      of recovery is an effective thing. Push pull legs exercise splits work great for
      anybody with some training experience. Whether you’re looking to build muscle or going for fat loss, a PPL
      break up will help you reach your goals and provide the finest outcomes potential.

      When you end the push pull legs cut up and want extra, you could have two options.
      To establish an estimate of your 1RM with out doing max lifts
      in the gym, enter the number of reps you can do with
      a given weight (in any unit) in our nifty calculator, and we’ll predict it
      for you. That’s why StrengthLog’s Push Pull Legs splits provides you
      several options. You can see details like rep vary, the number of sets, and the %
      of 1RM, the place relevant, in StrengthLog. General, the advantages of a PPL cut up outnumber
      the drawbacks.
      Put simply, calories are simply units of vitality,
      and your body’s ability to burn energy is known as your basal metabolic price.
      By boosting your body’s metabolism, you’re actually growing
      your inside temperature, (also known as the
      thermal effect). This thermal effect, burns extra models
      of power (calories), thus resulting in lipolysis or the breakdown of fats cells.

      When this occurs, you might need to stop what you’re doing or
      call it quits. But if you’re doing workouts appropriately, that soreness will
      solely linger for a number of hours (or days) and then, ultimately go
      away with relaxation. If it does, that’s
      a sign of pure microtears in your muscles and you shouldn’t be concerned.
      Collectively, there’s plenty of curiosity around the method
      to construct muscle quick. You don’t want to overload too much weight
      too rapidly or push your self via pain, as these behaviors could put
      you at extra risk for injury. As you ramp up the quantity of weight you’re lifting,
      decrease the variety of reps till you discover that
      candy spot the place you’re nonetheless challenged however in a
      place to full the exercise.
      Every workout contains drop sets to increase depth, but
      for just one set per bodypart, in order to keep
      away from overtraining and muscle catabolism. Researchers divided 20 male topics into two randomized groups and assigned
      one group to comply with a higher-protein food plan than the opposite (2.four grams
      per kilogram body weight per day versus 1.2). If you want to construct
      lean muscle mass and burn body fat, consistency is paramount.

      With our eight-week lean exercise program, you’ll improve your
      strength, build more muscle, burn extra physique fat, and get into the most effective shape of your life.
      With a combine of periodized energy and high-intensity functional coaching, you’ll flip right into a fat-burning machine and start seeing results very quickly.
      Max-OT was made famous by Skip La Cour, and is a strength primarily based, low
      volume program. Max-OT makes use of 9 working units per bodypart within the 4
      to six rep vary. After 12 weeks of training, you will take one
      full week off from training. With the program,
      you’re solely performing compound movements; the rational is that you do not want to perform isolation movements because compound actions will stimulate all the muscle fibers.

      We’ve mentioned the importance of managing your caloric surplus,
      prioritizing compound movements, and monitoring your progress consistently.
      Whether Or Not beginning with one of the best workout program for year-long
      bodybuilding beginners or refining your routine
      as a complicated lifter, these principles are universal.
      The greatest workout plan for bulking isn’t nearly lifting weights—it’s about strategic planning and execution over the
      lengthy haul. A year-long bulking plan to gain muscle and lose fats
      helps you construct power, measurement, and confidence with out
      frequent cutting phases’ unnecessary ups and downs. This method is ideal for anyone,
      from novices to seasoned lifters. That stated, I know some
      people advocate for short bulking phases instead of a greatest
      workout plan for year-long constructing muscle. Whereas shorter bulks may
      go for some, they usually lead to fast fats acquire and
      the necessity for constant chopping.
      The advanced push pull legs routine takes you on a six-week
      muscle-building journey, whereas the intermediate one is seven weeks lengthy.
      Sooner or later, you’ll have accomplished the PPL program
      of your alternative. For most individuals, resting for 2–3
      minutes between sets is ideal.
      The focus here is no longer on the eccentric, so your cadence will be 1 second
      down and 1 second up. Your aim is to get 10 reps.
      When you do, rack the weight and then strip off 50% of the
      weight (don’t forget to replace the collars!). That’s what happens
      if you rest greater than two minutes between sets. You’ll be using tried and examined, no frills exercises which are guaranteed
      to build huge slabs of muscle. Of course, to leave no stone unturned
      we’ll be combining volume and intensity although to give you a double-barrel stimulus for main gains.

      When it involves maximizing muscle mass or hypertrophy 
      there are a quantity of easy rules you should observe.

      With an Upper/Lower Break Up, you possibly can give attention to compound
      actions while still having room for isolation exercises.
      This balance helps to build general power whereas targeting specific muscle teams.
      Nevertheless, it might require more planning to ensure all
      areas are effectively trained.
      But when you transfer your palms nearer together, you shift the main focus away from
      the front delts, making the triceps do extra of the work.

      That makes the close-grip bench press a go-to exercise for
      overloading the triceps muscle for energy and development.
      Most bicep workouts, just like the barbell and dumbbell bicep curl,
      are isolation movements.
      The design of this program is to give attention to two primary
      muscle teams per day, alternating between them over the course of three days per week.
      The drawback to this program is that it’s one that a newbie likely shouldn’t jump into as
      it is going to be intense and will lead to overtraining should you’re not cautious.
      It’s greatest to have a 3-6 month lifting history behind you so you can be certain your body is
      prepared for this stress load. It’s also important that you perceive which
      elements contribute essentially the most to gaining lean muscle mass.
      A program that utilizes these ideas will typically fare better
      than one that does not. A normal recommendation that often is appropriate is to rest about 2–3 minutes between sets.

      Run for 10 seconds, then stand on the rails for 30 seconds, then run again. You’ll essentially keep doing this till you’re gassed out.
      He holds a journalism degree from the College of North Texas,
      where he competed in powerlifting. His final competition was the Texas State
      Open in December of 1982, however has continued to study and
      follow muscle power and hypertrophy. He is a four-decade
      veteran of the medical gadget business. Eventually, arguments for the “big lifts” monitor again to ego and the underlying desire
      to look badass within the fitness center. For certain,
      a sissy squat won’t draw a crowd and can elicit no “beast mode”
      compliments…other than from the few who’ve tried them for themselves.

      If you must increase your torso to an almost upright position to drag the bar up, you’re utilizing an extreme amount of weight for correct type.
      The incline dumbbell press is a good accessory
      movement to the bench press for constructing upper physique energy and a unbelievable exercise for pec muscle development in its personal
      proper. The bench press is the principle occasion for powerlifters measuring upper-body power during a competition. For bodybuilders, it allows the
      utilization of heavier loads than other chest workout routines to stimulate muscle growth.

      An effective workout plan for gaining muscle over a year combines a slight caloric surplus with constant,
      progressive coaching. Compound actions should form the foundation, supported by
      adequate protein consumption (1.6–2.0 grams per kilogram of
      physique weight). Frequently tracking weight, measurements, and strength ensures
      steady progress.
      Improvements like MyFitnessPal can show invaluable for tracking energy, hitting
      macro targets, and incorporating greater food decisions.
      You must additionally avoid using momentum to deliver the weight up.

      That applies to all workouts however is a key purpose that most individuals fail
      to get any profit from this specific movement.
      After six reps, pause within the bottom squat place for 3 seconds.

      Have a aim in your thoughts as to what number of reps you will achieve,
      making sure that it is greater than you managed
      final time you probably did the exercise. Your mindset on this workout schedule ought to be to get in, blast your
      muscle tissue like hell and then get out. By the tip of the primary three months of this muscle-building routine, you presumably can realistically double your energy and add a half-inch of lean muscle tissue throughout your physique.

      All I ask is that you convey dedication, effort and consistency to the table.
      But whenever you follow full body training you shift emphasis
      from muscle to muscle which lets you preserve
      power whereas reducing fatigue. That means your weight coaching program, your food
      regimen and vitamin, your supplementation,
      your cardio program, your lifestyle and each different significant issue there’s.
      I may even mention that you should have exercises the
      place you may be unable to progress on sure exercises, however
      are able to progress on others.
      Let’s go over every exercise and what muscles they work, and likewise alternatives for every train if you can’t or don’t want to do precisely those we’ve selected for you.
      In a push day workout, typically solely the front delts and lateral delts are included; the rear delts are labored in a pull workout.
      The primary perform of your pectoralis main is to convey
      your arm ahead (called shoulder flexion in anatomical terms),
      similar to if you finish up bench pressing, throwing a ball, or a punch.

      You can use your relaxation day back-to again or you can put one relaxation day between day 2
      and 3 or 3 and four to the same impact. This is a good plaxce to ebvaluate
      your schedule to maximize fitness center and personal time.

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