一項英國研究指出， 減肥的關鍵在於我們吃東西前是否「相信」這食物能餵飽我們，若用餐前就想著「這不夠飽」，就真的不會飽。

[中文報導來源]

地球搖擺 星座日期大挪移

中央社 更新日期:"2011/01/14 12:31"

水+醋酸鈉=Hot Ice!

簡單講完，酷不酷!

摺紙與數學之間的關係，很精采的演講。

今年「尼康微小世界(NIKON SMALL WORLD)」的顯微攝影比賽結果出爐

生物：雞與雞的相處之道

編輯 Gene 報導

來自科景的報導

物理：關於Higgs粒子質量的最新進展

編輯 John C. H. Chen 報導

中文報導原文來源請見：科景

Long-term relationships between ecological stability and biodiversity in Phanerozoic reefs

Wolfgang Kiessling

http://www.nature.com/nature/journal/v433/n7024/full/nature03152.html

Although the oceans cover 70% of the Earth's surface, our knowledge of biodiversity patterns in marine phytoplankton and zooplankton is very limited compared to that of the biodiversity of plants and herbivores in the terrestrial world. Here, we present biodiversity data for marine plankton assemblages from different areas of the world ocean. Similar to terrestrial vegetation, marine phytoplankton diversity is a unimodal function of phytoplankton biomass, with maximum diversity at intermediate levels of phytoplankton biomass and minimum diversity during massive blooms. Contrary to expectation, we did not find a relation between phytoplankton diversity and zooplankton diversity. Zooplankton diversity is a unimodal function of zooplankton biomass. Most strikingly, these marine biodiversity patterns show a worldwide consistency, despite obvious differences in environmental conditions of the various oceanographic regions. These findings may serve as a new benchmark in the search for global biodiversity patterns of plants and herbivores.

果蠅的“變性手術”（Courtship in the genes）

Male-specific fruitless specifies the neural substrates of Drosophila courtship behaviour

在求偶過程中，雄性果蠅會根據特定的感官提示表現出一系列先天性的有固有套路的行為。現在，主管這一行為的神經細胞群已經被識別出來。使這些神經細胞失去活性，足以使雄性果蠅對交配失去興趣；而改變雌性果蠅的大腦、使其產生這些細胞所產生的同樣蛋白，會使雌性果蠅表現出雄性果蠅特有的求偶行為。這些神經細胞產生一組被稱為FruM的蛋白，由“無果基因”（fru）編碼，後者以前曾被發現與雄性果蠅的求偶有關。使產生FruM的神經細胞失去活性，會抑制求偶行為，但不會改變果蠅行為的其他方面。操縱雌性果蠅的神經細胞使其產生FruM，足以使它們把其他雌性果蠅當成潛在交配物件。（Letter p. 395; News and Views）

GenGIS

http://kiwi.cs.dal.ca/GenGIS/Main_Page

很酷的東西！

Genomic Dissection of Population Substructure of Han Chinese and Its Implication in Association Studies

http://www.cell.com/AJHG/abstract/S0002-9297(09)00470-4

To date, most genome-wide association studies (GWAS) and studies of fine-scale population structure have been conducted primarily on Europeans. Han Chinese, the largest ethnic group in the world, composing 20% of the entire global human population, is largely underrepresented in such studies. A well-recognized challenge is the fact that population structure can cause spurious associations in GWAS. In this study, we examined population substructures in a diverse set of over 1700 Han Chinese samples collected from 26 regions across China, each genotyped at ∼160K single-nucleotide polymorphisms (SNPs). Our results showed that the Han Chinese population is intricately substructured, with the main observed clusters corresponding roughly to northern Han, central Han, and southern Han. However, simulated case-control studies showed that genetic differentiation among these clusters, although very small (F_ST = 0.0002 ∼0.0009), is sufficient to lead to an inflated rate of false-positive results even when the sample size is moderate. The top two SNPs with the greatest frequency differences between the northern Han and southern Han clusters (F_ST > 0.06) were found in the FADS2 gene, which associates with the fatty acid composition in phospholipids, and in the HLA complex P5 gene (HCP5), which associates with HIV infection, psoriasis, and psoriatic arthritis. Ingenuity Pathway Analysis (IPA) showed that most differentiated genes among clusters are involved in cardiac arteriopathy (p < 10⁻¹⁰¹). These signals indicating significant differences among Han Chinese subpopulations should be carefully explained in case they are also detected in association studies, especially when sample sources are diverse.

（中央社記者康世人新加坡27日專電）新加坡科技研究局人類遺傳小組在分析6000份來自新加坡和中國大陸10個省份的基因樣本後，發現漢人的基因南、北有別，存在0.3%的差異，但無東、西的差別。

Nature Biotechnology 27, 627 - 632 (2009)
Published online: 8 July 2009 | doi:10.1038/nbt.1552

Fifteen years of microbial genomics: meeting the challenges and fulfilling the dream

微生物基因體學15年的發展：跨越障礙、迎向未來

第一回合：黑猩猩和人類平分秋色

第二回合：黑猩猩獲勝

是日蝕，還是日食？

中文系待久了，第一個想到的不是網路Wikipedia

而是康熙字典。

還記得「台大抗煞一號」（NTU Anti-SARS No.1）嗎？

當時正值SARS疫情的期間，由台大前校長陳維昭先生統籌組織一支跨領域的研究團隊，針對SARS的棘手疫情正式宣戰。後來該團隊發明了一種能夠破壞SARS病原的人造化合物，即8-hydroxyotanoic acid，並以「台大抗煞一號」之名發表。當時的我雖然只能在該團隊中擔任旁枝末節的角色，但能夠接觸到這種跨領域合作的計劃對我來說已經是一種相當難能可貴的經驗了。（商品已上市：中美避煞靈）

Nature Neuroscience
Published online: 5 July 2009 | doi:10.1038/nn.2348

Synaptic inhibition of Purkinje cells mediates consolidation of vestibulo-cerebellar motor learning

這是一顆來自月球表面的岩石樣本

是的，它是阿波羅11號在40年前帶回來的

今天介紹AR（Augmented Reality），首先還是請看個影片：

看完上面影片，應可了解AR目前大致的發展狀況。