Зачем ученые из Колорадо надевают на деревья акселерометры

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Зачем ученые из Колорадо надевают на деревья акселерометры

В 2018 году ученые из Университета Колорадо в Боулдере (США) закрепили на двух ясенях в университетском парке акселерометры, чтобы измерять характер их раскачивания. Сегодня, спустя четыре года наблюдений, у них набралось достаточно данных для разработки новой безопасной технологии отслеживания роста деревьев. Она практически идеальна для городских условий и позволяет контролировать каждое дерево в отдельности.

Дерево, будучи живым организмом, непрерывно меняет свою структуру и поведение, и во многом это зависит от концентрации воды в его тканях. Как выяснили американские ученые, весной в период распускания почек в деревьях особенно много влаги, поэтому с одной стороны они становятся более тяжелыми, а с другой — более гибкими. Это напрямую влияет на характер их раскачивания на ветру, что незаметно человеческому глазу, но может быть зафиксировано акселерометрами.

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Измерения на ясенях доказали правоту ученых – зимой сухая и легкая древесина раскачивается мало, а по весне наоборот. Более того, по характеру раскачиваний можно с высокой точностью определить периоды роста растения и даже рассчитать, сколько оно прибавит в массе и размерах. И при этом не требуется брать образцы на анализ, не нужно повреждать дерево – данный метод может стать революционным в области озеленения общественных пространств.

5 КОММЕНТАРИИ

  1. Testosterone works to promote the looks of male secondary sexual traits,
    similar to a deepening voice and the expansion of body and facial hair.
    Physicians should concentrate on the scientific and underground worlds
    of AASs and, as with opioids and different potential
    drugs of abuse, should not permit the abuse of
    those medicine to limit their appropriate therapeutic use.
    The second carbon substitution with oxygen is assumed to increase the soundness of the 3-keto group and significantly enhance its anabolic component.

    This AAS may be very anabolic, with little androgenic impact at a therapeutic dose.

    While these steroids may not trigger long-term physical health points for
    ladies, the risk of virilization and its potential influence on psychological well-being in the
    lengthy run makes them unfavorable selections. Girls sometimes begin a cycle with
    a every day dose of 20–40 mcg, incrementally rising by 10–20 mcg every 3–4 days.
    This cycle lasts 4-6 weeks, adjusting dosages to
    maximize fat loss while preserving side effects manageable.
    Dosages can attain up to 120–160 mcg per day, however it’s important
    for ladies to watch their physical responses and often check
    blood strain and heart price. Some athletes use them not for medical causes but as a way to increase athletic performance and construct muscle and body mass.
    Whereas anabolic steroids are often used for efficiency enhancement and Bodybuilding nutrition facts, catabolic steroids are primarily prescribed for medical purposes to deal with inflammatory
    and autoimmune situations.
    Extra specifically, gynecomastia outcomes from an absolute or relative deficiency of androgenic, or
    absolute or relative excess of estrogenic, action on breast tissue.
    A variety of situations that have an effect on the levels or actions of those intercourse hormones can subsequently cause gynecomastia.
    Not surprisingly, gynecomastia is a facet effect that may occur as a end result of AAS use.
    In an uncontrolled multicenter contraceptive
    efficacy examine, 271 males obtained 200 mg testosterone
    enanthate weekly for a minimal of 6 months
    (202).
    Many users have additionally reported main depressive symptoms and sleep problems – significantly in periods of abstinence after intense use 83, 84.
    In reproductive goal tissues, testosterone can be thought-about to be a prohormone,
    being readily converted by 5α-reductase to the stronger androgen dihydrotestosterone
    (DHT). In different tissues, such as fatty tissue and elements of the brain, testosterone is converted by aromatase to the estrogen, estradiol (E2).

    Moreover, possessing these Anabolic steroids with no proper prescription is against the regulation and if discovered, the user could face troublesome authorized consequences, penalties, and even a prison sentence.
    These in turn cause steroid or substance use dysfunction which causes the users to proceed taking it even after going through unwanted aspect effects like anxiety
    or aggression. Thus, it might be said that the consumption of Anabolic steroids could cause more harm than it might do any good to its customers.
    And hence, there is not a point in gaining short-term progress at
    the cost of physical and mental health. Thus, a natural
    way could be better and recommended for rising workout performance and
    strength like proper exercising and following an excellent food regimen and nutrition schedule would enhance[12] sports activities
    performance. Furthermore, early exposure to steroids in teens might additionally affect brain health and cause adjustments in sure mind regions like studying and feelings.

    Testosterone «boosters»—often natural or vitamin‑based products—represent a $3.7 billion global market projected to nearly double
    by 2030. This means there are three million users in the Usa, and
    epidemiologic research recommend up to 30 % of long-term AAS customers could develop
    dependancy, some with co-occurring physique picture problems.
    Research in medical trials and experiences
    in Olympic and professional athletes have proven that elevated T will increase lean muscle mass, energy,
    and energy. The proof is so compelling that the Olympics and skilled sports
    activities enforce bans on testosterone use due to the unfair
    advantage these AAS create. These bans to maintain fair competitors
    are also a part of AAS’s attract among athletes, weekend warriors, and
    others. Correct therapeutic use and coping with illegal misuse of anabolic steroids require
    an interprofessional staff effort.
    Statins may cause muscle pain in a small proportion of customers (152), however this facet impact
    would possibly occur extra regularly in those
    who engage in regular intense train (153). For this group of patients, an expert panel recommends the usage of hydrophilic statins (rosuvastatin and pravastatin) at a low-to-moderate dose,
    as hydrophilic statins are regarded as more hepatoselective
    (153). If the statin just isn’t tolerated, it is advisable to vary to a lipophilic
    statin (e.g. simvastatin or atorvastatin), scale back the dose, or attempt an alternate-day routine (154).
    If regardless of these attempts statin intolerance remains a problem, other pharmacological choices,
    such as ezetimibe or proprotein convertase subtilisin/kexin kind 9 (PCSK9) inhibitors, ought to
    be explored. The stimulatory impact on erythropoiesis is dose-dependent – at least beyond 300 mg testosterone enanthate weekly – and
    is extra pronounced in older men (42). It takes a number of months
    of testosterone remedy earlier than hematocrit stabilizes,
    with one (uncontrolled) trial reporting a steady improve in hematocrit
    up to 12 months in older males receiving testosterone (43).

    In addressing illicit use, all members need to concentrate on the signs of steroid misuse and
    be ready to counsel as necessary to attempt to resolve the issue.
    In legitimate therapeutic use, the clinician will prescribe an agent based mostly on clinical necessity
    for a specific symptom or indication, and the pharmacist can verify appropriate dosing and verify for drug interactions.
    Nurses can present counseling on administration together
    with the pharmacist and monitor for adverse results on follow-up visits.
    Pharmacists and nurses need an open communication channel with
    the prescriber.
    Consumption of anabolic steroids could cause severe hurt to teenagers or
    anybody who tries to take it for fast muscle and power positive aspects and will largely
    have an result on their lives. Nonetheless, plenty of customers reported that anabolic steroids have also enabled[4] them
    to recover sooner after intense coaching periods
    and increased libido. Moreover, Anabolic steroids may
    go by enhancing the athletic efficiency of athletes and bodybuilders.
    Anabolic steroids, also known as anabolic-androgenic steroids, are an artificial number
    of the male intercourse hormone often identified as testosterone.

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