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Double Takes: Animal Look-A-Likes

為了解決Hand around的問題，作者Jameson, Karen 這樣論述：

A former teacher, Karen Jameson holds a master’s degree in education. She’s the author of MOON BABIES (Putnam, 2019), WOODLAND DREAMS, FARM LULLABY, and WHERE THE WEE ONES GO (Chronicle, 2020, 2021 & 2022) and SHINE (Groundwood, TBD), among other titles. Karen has published a number of nonfiction sc

ience articles in AppleSeeds and Ask magazines. She has won a special mention picture book poetry award at the SCBWI CenCal Writer’s Day and is the recipient of the Sue Alexander Grant. Lorna Scobie grew up in the depths of the English countryside, climbing trees and taking her rabbit for walks in t

he fields. She is an illustrator and designer, now based in south-east London. Growing up surrounded by nature has heavily influenced her illustrations and her work often revolves around the natural world and animal kingdom. She enjoys illustrating non-fiction 0-6 and 6+, black and white, children’s

books, and pre-school books. Lorna draws every day, and always has a sketchbook close to hand when she’s out and about. She illustrates her work by hand rather than digitally, as she enjoys the spontaneity and also the ’happy mistakes’ that can happen along the way. Lorna uses a range of materials,

including paint, pencils and pens.

Hand around進入發燒排行的影片

通過使用流動分離控制改進翼型表面改性的數值模擬以提高氣動性能

為了解決Hand around的問題，作者Andrew Gare Zebua 這樣論述：

One of the most widespread forms of alternative energy generation is the use of wind turbines. Wind turbines that use horizontal axis (HAWT) and wind turbines that use vertical axis(VAWT) are the two primary varieties of wind turbines that are put into operation today. One of the airfoils commonly

used as blades for VAWT is the DU 06 W 200. In order to increase aerodynamic performance and efficiency, it is crucial to control the flow separation and to know the fluid mechanics behavior of an airfoil. This thesis uses four methods to control flow separation on an airfoil: riblets, cavities, spo

ilers, and hybrid airfoils. Fluid mechanics that uses numerical equations has been used throughout the length of this thesis in order to explore and keep track of each unique example. This has been done in order to support the overall argument. Furthermore, the RANS equation K-Omega SST turbulence m

odel was adopted so that the findings would correctly reflect the turbulence flow that happens in the natural world. From the four methods mentioned, ten airfoil variants, including the base airfoil, have been conducted in this study. Even though the maximum CL to CD ratio of the riblets, cavity, an

d spoiler methods is lower than the plain airfoil, at some angles, the CL to CD ratio value is higher than the plain airfoil. After testing ten airfoil variants using five meters per seconds velocities, five of the best airfoil variants were chosen to be tested using different Reynolds numbers. In c

onclusion, it is decided if the hybrid airfoil method, especially hybrid blade airfoil 1, is the best because it could improve aerodynamic performance and delay the stall angle.

You Got Anything Stronger?: Stories

為了解決Hand around的問題，作者Union, Gabrielle 這樣論述：

THE NEW YORK TIMES BESTSELLERSo. Where were we? Right, you and I left off in October 2017.When I released We’re Going to Need More Wine, the response was so great people asked when I would do a sequel. Frankly, after being so open and honest in my writing, I wasn’t sure there was more of me I was re

ady to share. But life happens with all its plot twists. And new stories demand to be told.A lot has changed in four years--I became a mom to two amazing girls. My husband retired. My career has expanded so that I have the opportunity to lift up other voices that need to be heard. But the world has

also shown us that we have a lot we still have to fight for--as women, as black women, as mothers, as aging women, as human beings, as friends. In You Got Anything Stronger?, I show you how this ever-changing life presents challenges, even as it gives me moments of pure joy. I take you on a girl’s n

ight at Chateau Marmont, and I also talk to Isis, my character from Bring It On. For the first time, I truly open up about my surrogacy journey and the birth of Kaavia James Union Wade. And I take on racist institutions and practices in the entertainment industry, asking for equality and real accoun

tability. You Got Anything Stronger? is me at my most vulnerable. Funny, tender, and so good. Mindy Kaling, #1 New York Times bestselling author of Why Not Me?These essays are brimming with veracity, humor, and daring sincerity that becomes contagious. In depictions of motherhood, Hollywood, and eve

n the most devastating realities, Union keeps a remarkably steady hand; she speaks with the warmth of a late night phone call. Kiley Reid, New York Times bestselling author of Such a Fun Age This is an absolute must-read. Gabrielle doesn’t just open up--she opens up conversations we need to be havin

g. Sunny Hostin, New York Times bestselling author of Summer on the Bluffs and I Am These TruthsHere is that rare book that will not only touch your heart, but also send you back out there to stand up for yourself and others. Meena Harris, #1 New York Times bestselling author of Ambitious GirlThis b

ook is a masterclass in authenticity and vulnerability, and I loved it! I drank up the words on the pages because this is Gabby’s heart wide open in print. It is a stunning read that is deeply humanizing and I’m inspired by the courage and humor in it. It’s just so DAMB GOOD! Luvvie Ajayi Jones, New

York Times bestselling author of Professional Troublemaker: The Fear-Fighter ManualGabrielle Union has written another wonderful book that pulls no punches. The searing honesty of You Got Anything Stronger? is a gift to readers. Union faces head-on the different ways women become mothers and partne

rs in an emotionally resonant and universal way. Her voice is relatable, warm, and sharp. You owe it to yourself to curl up with this book and to pass it along to a friend. Tressie McMillan Cottom, Professor and MacArthur FellowGabrielle Union is serving us another stellar memoir. . . She gets even

deeper in this series of essays that detail what her life is like now, including her experience with surrogacy and racism in the entertainment industry. Cosmopolitan, 15 Compelling Fall 2021 Books to Add to Your Reading ListUnion returns with more wise, intimate personal stories. . . The respect wit

h which she writes about the people in her life is a true testament to her character. Always smart, inviting, and generous with emotion, Union’s second exquisite memoir reads like a conversation with your most enlightened, thoughtful friend. Booklist (starred review)The star actor and producer demon

strates her dedication to empowering young Black women and other marginalized people. As these essays ably show, Union is a dynamic role model for young Black women in all walks of life. Kirkus ReviewsUnion deftly writes about the life-changing diagnosis that led her to surrogacy as a path to moth-e

rhood; the impact of cracking open her family’s life for all to see; and how she discovered who she is beyond others’ projections. . . She makes you wish she were your best friend, her number saved in your favorites--a kindred spirit always ready to share real talk over a round of shots. EssenceHear

tfelt, vulnerable, witty, and sincere. CNNIn her follow-up to her debut memoir, We’re Going to Need More Wine, actor and writer Gabrielle Union picks up where she left off, delving deep into her journey to conceive daughter Kaavia, her experience as a stepmom, and the rest -- ugly, beautiful, and in

-between. Break out the liquor, folks, because you’re going to want a stiff drink to go with this dish. BustleEven more open and relatable than her first. This time around the actor and author is opening up about her surrogacy journey, fighting against racial inequality in Hollywood, and her iconic

Bring It On character, Isis. Grab a glass of your drink of choice and settle in, because reading Union’s essays is every bit as satisfying as a nice, long chat with your best friend. Popsugar

靜電紡絲—循環熱壓法製備PVDF膜之多態結晶相分析

為了解決Hand around的問題，作者蘇柏諺 這樣論述：

本研究先將聚偏二氟乙烯(PVDF)以靜電紡絲之製程產生一定量的β相，然後再使用循環熱壓的方式來探討其對於PVDF生成β相之影響及三相(α、β、γ)的相變化與熱穩定性。其中的重點在於循環熱壓法可否影響靜電紡絲PVDF的極性相(β、γ)之生成。本研究分成兩部分，第一部分先利用機械壓縮的方式來探討在何種壓力(50 ~ 500 MPa)的條件下最有利於靜電紡絲PVDF中極性相的生成；第二部分則沿用第一部分的最佳壓力(300 MPa)來對靜電紡絲PVDF進行循環熱壓的實驗。試片表面形貌由SEM觀察，而DSC與FTIR可以分別計算總結晶度(Xc)與個別的相含量(F(α)、F(β)、F(γ))，且總結晶度

與相含量相乘可得到單相結晶度(Xα、Xβ、Xγ)最後在使用XRD來推估試片的應變與晶粒大小。首先，第一部分中以機械壓力對電紡PVDF進行壓縮，由FTIR的計算結果發現在壓力為300MPa的條件下PVDF的F(β)由原本電紡的56.22 %上升到最高值66.94 %，因此後續循環熱壓便全部在壓力為300 MPa的固定壓力下進行。第二部分實驗中的SEM圖表現出在熱壓溫度大於100 oC時，試片會有較低的孔隙率。但是因為電紡PVDF初始孔隙較多，因此有機會出現空氣團聚而形成孔洞。從DSC計算的結晶性中可以發現所有試片均在熱壓溫度為140 oC時有最高的結晶性，表示PVDF在此溫度最容易生成穩定的結晶

型態，其中最高結晶度為試140 oC熱壓1循環(140-1)的58.74 %。此外，在FTIR中我們不只單純計算出各相的含量，我們必須將DSC計算的結晶度(Xc)與各別相含量(F(α)、F(β)及F(γ))相乘，從而得到真正的單相結晶度(Xα、Xβ及Xγ)，以便更好觀察循環熱壓法對於電紡PVDF的影響。而其中試片160-1有最高的Xβ = 43.7 %，試片140-1有最高的Xα = 15.4 %以及第二高的Xβ = 43.3 %。另外，在熱壓溫度低於165 oC時Xβ會隨熱壓溫度增加而增加。由此可知在140 oC ~ 165 oC時我們可以此為基礎來增加更多的β相結晶度。然而，本研究中的循環

熱壓法的Xβ與Xc會隨著熱壓的循環次數增加而急遽減少，就像是在4循環實驗中熱壓溫度高於140 oC時的各相結晶性皆不超過15 %，在8循環中更是不超過10 %。在DSC與FTIR的資料整合中，我們還可以整理出在電紡PVDF的熱壓製程後對各相熱穩定性的影響。從試片165-2與170-2的DSC圖中可以發現γ相的吸熱峰值最低點為172.69 oC，也是本研究中發現的γ相存在的最低熔點。另外，在試片165-8中觀察到兩個吸熱峰(174.87 oC及176.37 oC)，再加上此試片中的β相結晶度大於α相結晶度，推斷β相在此條件下的熱穩定性是大於α相的，所以174.87 oC為β相的最高熔點。再由XR

D的分析結果中我們得知α相的應變一直高於β相，並且隨著循環次數增加而略為增加，符合文獻資料中提到的β相可以由受應力影響的α相變化而來。雖然電紡PVDF的結晶度會隨熱壓溫度及循環次數增加而降低，而由Scherrer’s 方程式估算的晶粒大小中顯示各相的平均晶粒大小會隨著熱壓的溫度及循環次數提高而增加。綜上所述，相較於原始的電紡纖維膜，循環熱壓製程可以有效增加試片的密度以及降低試片的缺陷。當熱壓溫度低於或等於140 oC時，熱壓循環次數的增加亦同時增加Xc與Xβ；而當熱壓溫度高於140 oC時會增加高分子鏈的活動性從而使Xc與Xβ呈現相反的趨勢。在140 oC及160 oC的1循環熱壓條件下可得到

最佳的Xβ為43.5 %，因為此溫度最接近PVDF的再結晶溫度。為獲得大晶粒與高結晶度的β相，熱壓溫度應該要低於 165 oC且低於4次循環；而大晶粒與高結晶度的γ相熱壓溫度則是要大於160 oC且循環約2 ~ 4次。