Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Rocket Propulsion In Empty Space - II01:12

Rocket Propulsion In Empty Space - II

2.9K
The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...
2.9K
Rocket Propulsion in Empty Space - I01:13

Rocket Propulsion in Empty Space - I

3.1K
The driving force for the motion of any vehicle is friction, but in the case of rocket propulsion in space, the friction force is not present. The motion of a rocket changes its velocity (and hence its momentum) by ejecting burned fuel gases, thus causing it to accelerate in the direction opposite to the velocity of the ejected fuel. In this situation, the mass and velocity of the rocket constantly change along with the total mass of ejected gases. Due to conservation of momentum, the...
3.1K
Projectile Motion01:20

Projectile Motion

14.7K
An object thrown in the air follows a parabolic path under the influence of Earth's gravitational force. The motion of such an object is called projectile motion, and the object itself a projectile. The parabolic path followed by the projectile is called the trajectory. Some common examples of projectile motion are the launching of fireworks, a golf ball in the air, meteors entering the Earth's atmosphere, and the firing of bullets.
When an object falls under gravity and has no...
14.7K
Rocket Propulsion in Gravitational Field - II01:03

Rocket Propulsion in Gravitational Field - II

2.3K
A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
A rocket's acceleration depends on three major factors, consistent with the...
2.3K
Motion of a Projectile01:23

Motion of a Projectile

636
Projectile motion becomes evident when a player kicks the ball into the air. The launch angle, or the angle at which the ball is kicked, plays a crucial role in determining the trajectory of the projectile. As the ball soars through the air, influenced solely by gravity, its motion can be dissected into two independent velocity components: the horizontal and the vertical.
Horizontal motion, governed by the initial kick, maintains a constant velocity throughout the flight of the soccer ball.
636
Light Acquisition02:16

Light Acquisition

8.4K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
8.4K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Re-evaluating endometrial injury for IVF: was a promising approach abandoned prematurely? A critical review.

Reproductive biomedicine online·2026
Same author

PGT-A: Houston, we have a problem.

Journal of assisted reproduction and genetics·2023
Same author

A decrease in endometrial thickness before embryo transfer is not associated with preterm birth and placenta-mediated pregnancy complications.

Reproductive biomedicine online·2022
Same author

Observations on clinical assessment of endometrial receptivity.

Fertility and sterility·2022
Same author

Preimplantation genetic testing for aneuploidy in patients with low embryo numbers: benefit or harm?

Journal of assisted reproduction and genetics·2022
Same author

Does gonadotropin-releasing hormone agonist cause luteolysis by inducing apoptosis of the human granulosa-luteal cells?

Journal of assisted reproduction and genetics·2021
Same journal

Ovarian reserve markers in World Health Organization type 1 anovulatory disorders: a systematic review and meta-analysis.

Reproductive biomedicine online·2026
Same journal

Effect of embryo culture medium pH on live birth rate after IVF/ICSI: a double-blind, multicentre, randomized trial.

Reproductive biomedicine online·2026
Same journal

Polyendocrine metabolic ovarian syndrome and cardiometabolic profile in offspring: a propensity score matched cohort study.

Reproductive biomedicine online·2026
Same journal

Antinuclear antibodies in women with recurrent early pregnancy loss: prevalence and impact on subsequent pregnancy outcome.

Reproductive biomedicine online·2026
Same journal

Effect of adenomyosis on the cumulative live birth rate in oocyte donation cycles: a retrospective analysis.

Reproductive biomedicine online·2026
Same journal

Intermediate FMR1 cytosine‒guanine‒guanine repeats do not impair assisted reproductive technology outcomes in a large real-world cohort.

Reproductive biomedicine online·2026
查看所有相关文章

相关实验视频

Updated: May 16, 2025

High-Speed Optical Diagnostics of a Supersonic Ping-Pong Cannon
05:40

High-Speed Optical Diagnostics of a Supersonic Ping-Pong Cannon

Published on: March 24, 2023

980

月球镜头 月球镜头

Robert F Casper1

  • 1TRIO Fertility, Department of Obstetrics and Gynecology, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Mount Sinai System, Toronto, Ontario, Canada..

Reproductive biomedicine online
|April 26, 2025
PubMed
概括
此摘要是机器生成的。

辅助生殖技术已经出现了许多突破性的创新,改变了生殖内分泌学和不孕症领域. 这些"月球照"导致了患者护理的重大进步.

关键词:
辅助生殖技术是一种辅助生殖技术.这是GnRH激动剂.莱特醇是一种月球镜头 月球镜头阴道超声波的使用方法

更多相关视频

High-speed Particle Image Velocimetry Near Surfaces
11:59

High-speed Particle Image Velocimetry Near Surfaces

Published on: June 24, 2013

32.9K
High Throughput Microinjections of Sea Urchin Zygotes
12:40

High Throughput Microinjections of Sea Urchin Zygotes

Published on: January 21, 2014

14.5K

相关实验视频

Last Updated: May 16, 2025

High-Speed Optical Diagnostics of a Supersonic Ping-Pong Cannon
05:40

High-Speed Optical Diagnostics of a Supersonic Ping-Pong Cannon

Published on: March 24, 2023

980
High-speed Particle Image Velocimetry Near Surfaces
11:59

High-speed Particle Image Velocimetry Near Surfaces

Published on: June 24, 2013

32.9K
High Throughput Microinjections of Sea Urchin Zygotes
12:40

High Throughput Microinjections of Sea Urchin Zygotes

Published on: January 21, 2014

14.5K

科学领域:

  • 生殖医学是一种生殖医学.
  • 生物技术是生物技术.
  • 医疗创新是医疗方面的创新.

背景情况:

  • 辅助生殖技术 (ART) 是一个快速发展的领域.
  • 生殖内分泌和不孕症的实践经历了重大变化.
  • 该领域受益于众多变革性的创新.

研究的目的:

  • 突出突破性创新 ("月球镜头") 在ART中的影响.
  • 为了承认在生殖医学中见证的变革性变化.
  • 强调生殖内分泌学和不孕不育方面的进展.

主要方法:

  • 对ART的历史进展进行回顾.
  • 分析生殖医学中的变革性创新.
  • 对治疗不孕症技术进步的定性评估.

主要成果:

  • 艺术已经经历了大量的"月球镜头",导致了显著的进展.
  • 技术进步已经从根本上改变了生殖内分泌学和不孕症.
  • 该领域的演变以持续的创新和变革性的变化为标志.

结论:

  • 人工智能技术领域的特点是频繁而有影响力的突破性创新.
  • 这些创新已经深刻地改变了生殖内分泌学和不孕症的实践和结果.
  • 见证这些进步是从事该领域工作的人自创立以来的特权.