we standardised frequency estimates to number of acts per month. Where possible, we derived the proportion of all intercourse acts that were AI or UAI. When the mean number of AI acts was reported only among the sub-samples who practise AI, we also derived the mean among the whole...
9. 杂技运动在训练时的照片如图所示，有一小球自由落下，落到水平桌面后反弹，如此数次落下和反弹。若规定竖直向下为正方向，碰撞时间不计，空气阻力不计，则下列v-t图像中正确的是（ ）
What does “white lung” mean? Despite references to “white lung” and “white lung syndrome” floating around right now, it’s not a medical term, says Daniel Ganjian, M.D., a board-certified pediatrician at Providence Saint John’s Health Center in Santa Monica, CA. ...
Official answer: Sore throats are common. Most are caused by viruses, but throats can also become sore as a result of smoking...
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Implantation is a complex process where a blastocyst stage embryo attaches to the receptive endometrium of the mother and pregnancy begins. For this to occur, there must be total synchrony between the embryo and the endometrium.
Hope and love are popular themes of literature and art in many human societies. The human physiology of love and hope is less well understood. This review presents evidence that the lack of love and/or hope delays growth disturbs development and maturati
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What role does machine learning play in improving Conversational AI? Machine learning improves Conversational AI by refining algorithms to deliver more human-like and effective conversations. It empowers systems to learn from interactions, improving understanding, response accuracy and personalization. ...
This has implications for the most beneficial uses of AI in drug-discovery projects. What does this mean for applications of AI in drug discovery? AI can, in principle, deliver all of the above aims: it can make decisions faster (predictions are faster than experiments) and more cheaply (...