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Enzyme treatment of skin samples improves microbiome analysis
bacterial skin microorganism skin disease
2021/8/11
Healthy skin has a bacterial shield to protect against germs: the microbiome. This complex assembly of microorganisms was previously believed to be difficult to decipher. A team of researchers has now...
Lunar samples solve mystery of the moon's supposed magnetic shield
lunar magnetic field magnetization lunar soil
2021/8/9
Tests of glass samples gathered on Apollo missions show magnetization may result from impacts of objects like meteors, not as a result of magnetization from the presence of a magnetic shield.
Fossil pollen samples suggest vulnerability to extinctions ahead（图）
Fossil pollen samples suggest vulnerability extinctions ahead
2020/9/4
Reduced resilience of plant biomes in North America could be setting the stage for the kind of mass extinctions not seen since the retreat of glaciers and arrival of humans about 13,000 years ago, cau...
Detection of Klebsiella pneumonia in respiratory tract samples by the loop-mediated isothermal amplification method
环介导等温扩增技术 呼吸道感染 肺炎克雷伯菌 细菌培养法 DNA测序技术
2021/3/29
建立环介导等温扩增技术（loop-mediated isothermal amplification，LAMP）检测呼吸道感染患者痰液中肺炎克雷伯菌（Klebsiella pneumoniae，Kpn）的方法并进行初步应用。 方法：基于Kpn phoE基因设计4条特异性引物，对反应条件中的Mg2+和甜菜碱浓度进行优化，建立检测Kpn LAMP方法并进行特异性和灵敏度试验；收集308例呼吸道感染患...
BUILDING CLASSIFICATION OF VHR AIRBORNE STEREO IMAGES USING FULLY CONVOLUTIONAL NETWORKS AND FREE TRAINING SAMPLES
Building Classification VHR Airborne Stereo Images FCN Base Map Mislabels Free Training Samples Fine Tuning Atrous Convolution
2018/11/9
Semantic segmentation, especially for buildings, from the very high resolution (VHR) airborne images is an important task in urban mapping applications. Nowadays, the deep learning has significantly i...
PURIFICATION OF TRAINING SAMPLES BASED ON SPECTRAL FEATURE AND SUPERPIXEL SEGMENTATION
Beijing-2 Satellite imagery Training Samples Purification Spectral Feature Superpixel Segmentation
2018/5/14
Remote sensing image classification is an effective way to extract information from large volumes of high-spatial resolution remote sensing images. Generally, supervised image classification relies on...
A Nonstandard Variant of Learning with Rounding with Polynomial Modulus and Unbounded Samples
Lattices LWE Learning with Rounding
2018/1/30
The learning with rounding problem (LWR) has become a popular cryptographic assumption to study recently due to its determinism and resistance to known quantum attacks. Unfortunately, LWR is only know...
Rock Samples Indicate Water is Key Ingredient for Crust Formation
Rock Samples Indicate Water Crust Formation
2017/7/19
By examining the cooling rate of rocks that formed more than 10 miles beneath the Earth’s surface, scientists led by The University of Texas at Austin Jackson School of Geosciences have found that wat...
Evidence for the solar wind in lunar magmas: A study of slowly cooled samples of the Apollo 12 olivine basalt suite
hydrogen isotopes melt inclusions mare basalts SIMS lunar olivine
2017/4/10
While it is now recognized that the Moon has indigenous water and volatiles, their total abundances are unclear, with
current literature estimates ranging from nearly absent to Earth-like levels. Sim...
Estimation of the Hardness of the Learning with Errors Problem with a Restricted Number of Samples
learning with errors hardness estimation lattice-based cryptography
2017/2/21
Lattice-based cryptography is a promising candidate to build cryptographic primitives that are secure against quantum algorithms. The Learning with Errors problem is one of the most important hardness...
Reproducibility of urinary biomarkers in multiple 24-h urine samples
biomarker bisphenol A reproducibility sodium 24-h urine sample
2018/11/12
Background: Limited knowledge regarding the reproducibility of biomarkers in 24-h urine samples has hindered the collection and use of the samples in epidemiologic studies.
Objective: We aimed to eva...
CLOUD REMOVAL FROM SENTINEL-2 IMAGE TIME SERIES THROUGH SPARSE RECONSTRUCTION FROM RANDOM SAMPLES
Sentinel-2 Clouds Image Time Series Image processing Pre-processing
2016/7/27
In this paper we propose a cloud removal algorithm for scenes within a Sentinel-2 satellite image time series based on synthetisation of the affected areas via sparse reconstruction. For this purpose,...
Serum folate and homocysteine concentrations in large population samples of US ethnic and racial groups
Serum folate homocysteine concentrations
2016/6/2
Two papers, one reporting serum folate concentrations (1) and
one reporting serum homocysteine concentrations (2) in large
population samples of US ethnic and racial groups, appeared
recently in th...
Advances in Imaging Secondary Ion Mass Spectrometry for Biological Samples
membrane organization chemical composition imaging NanoSIMS ToF-SIMS dynamic SIMS
2016/5/25
Imaging mass spectrometry combines the power of mass spectrometry to identify complex molecules based on mass with sample imaging. Recent advances in secondary ion mass spectrometry have improved sens...
Coxiella burnetii in samples from cattle herds and sheep flocks in the Kars region of Turkey
Coxiella burnetii Q fever cattle
2016/1/29
This study was aimed at determining the presence of C. burnetii in cattle and sheep herds in the Kars region of Turkey using serological and molecular methods. As a serological technique, C.burnetii I...