関連する実験動画
Updated: Jul 21, 2025
09:13
A Vibrotactile Feedback Device for Seated Balance Assessment and Training
Published on: January 20, 2019
6.4K
まとめ
インディゴは農民に土壌の炭素を貯蔵するために支払いますが 研究者はこの炭素農業の実際の気候効果に疑問を呈しています 更に調査が必要である.
科学分野:
- 農業科学
- 環境科学
- 気候科学
背景:
- インディゴは,土壌の有機炭素を増やすことを目的とした慣行を実装する農家に金銭的インセンティブを提供しています.
- 土壌の炭素吸収は,大気中の二酸化炭素を除去することによって気候変動を緩和するための提案された方法です.
研究 の 目的:
- 企業資金による土壌炭素貯蔵プログラムに関連した 気候の恩恵の主張を評価する.
- インディゴの農家のインセンティブプログラムに 重要な気候上の利点があるという科学的根拠を 批判的に評価する.
- 農業環境における土壌の炭素貯蔵の測定と検証に用いられる方法論を調査する.
主な方法:
- 土壌の炭素動力学と農業の炭素吸収に関する科学文献のレビュー
- インディゴのような企業が炭素の貯蔵量を 定量化するために使っているデータと方法論の分析
- 報告された利益の妥当性について,独立した研究者や気候科学者と協議する.
主要な成果:
- 証拠によると,土壌の炭素を増加させることは可能ですが,この炭素の純気候効果と長期的な安定性は不確実です.
- 異なる農業と気候のシナリオの下での土壌の炭素増加の追加性と逆転の可能性について懸念があります.
- 気候変動の恩恵の独立した検証は 現在の企業の土壌炭素プログラムにとって大きな課題です
結論:
- インディゴの土壌炭素農業イニシアチブの 気候上の利益は 厳格な独立した科学的検証を必要としています
- 土壌の炭素吸収を測定し検証する現在の方法は,農業の生態系と気候の相互作用の複雑さを完全に捉えていない可能性があります.
- 市場ベースの土壌炭素ソリューションの気候への影響を評価する際には,透明性と堅実な科学的証拠を強調する慎重なアプローチが必要である.
関連する概念動画
01:12Taping Over Different Ground Profiles
48
Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
48
01:24Pole and System Stability
337
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
337
01:19Vibrating Concrete
122
Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...
122
01:21Rigid Body Equilibrium Problems - II
7.1K
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
7.1K
00:49Rigid Body Equilibrium Problems - I
4.5K
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
4.5K
01:05Static Equilibrium - I
12.8K
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
12.8K