Intercalation events visualized in single microcrystals of graphite.

The electrochemical intercalation of layered materials, particularly graphite, is fundamental to the operation of rechargeable energy-storage devices such as the lithium-ion battery and the carbon-enhanced lead-acid battery. Intercalation is thought to proceed in discrete stages, where each stage represents a specific structure and stoichiometry of the intercalant relative to the host. However, the three-dimensional structures of the stages between unintercalated and fully intercalated are not known, and the dynamics of the transitions between stages are not understood. Using optical and scanning transmission electron microscopy, we video the intercalation of single microcrystals of graphite in concentrated sulfuric acid. Here we find that intercalation charge transfer proceeds through highly variable current pulses that, although directly associated with structural changes, do not match the expectations of the classical theories. Evidently random nanoscopic defects dominate the dynamics of intercalation

The use of geomagnetic field models in magnetic surveys

The importance of global geomagnetic field models for the reduction of magnetic surveys is discussed. It is demonstrated that a numerical model with adequate secular variation correction, provides a suitable representation of the regional field. The limitations of the presently available models are reported, with emphasis on the International Geomagnetic Reference Field

KINECTWheels: wheelchair-accessible motion-based game interaction

The increasing popularity of full-body motion-based video games creates new challenges for game accessibility research. Many games strongly focus on able-bodied persons and require players to move around freely. To address this problem, we introduce KINECTWheels, a toolkit that facilitates the integration of wheelchair-based game input. Our library can help game designers to integrate wheelchair input at the development stage, and it can be configured to trigger keystroke events to make off-the-shelf PC games wheelchair-accessible

Investigation of the fiber reinforcement of a cobalt base alloy for application at elevated temperature

Technique developed for incorporating alumina and silicon carbide fibers in cobalt base alloy for application at high temperature

Magsat: A satellite for measuring near earth magnetic fields

Magsat, designed for making measurements of the geomagnetic vector field, is evaluated. For accurate vector measurements the attitude of the fluxgate magnetometer will be determined to about 15 arc-seconds. Expected measurement accuracy will be 6 (gamma) in each component and 3 in magnitude. The Magsat data will be applied to solid earth studies including modeling of the Earth's main magnetic field, delineation of regional magnetic anomalies of crustal origin, and interpretation of those anomalies in terms of geologic and geophysical models. An opportunity will be presented to the scientific community to participate in data use investigations

Uji Efek Dekokta Angkak terhadap Kadar Trombosit Tikus Putih Jantan Galur Wistar Trombositopenia yang Diinduksi Cisplatin

Latar Belakang: Trombositopenia merupakan gejala utama penyakit demam berdarah dengue, yang masih merupakan masalah kesehatan dengan tingkat morbiditas dan mortalitas yang tinggi di Kalimantan Barat. Angkak (beras fermentasi Monascus purpureus) secara empiris digunakan masyarakat dalam bentuk seduhan sebagai obat untuk meningkatkan produksi sel darah, salah satunya adalah untuk meningkatkan kadar trombosit darah. Penelitian ini bertujuan untuk mengetahui efek dekokta angkak terhadap kadar trombosit tikus putih jantan galur Wistar trombositopenia yang diinduksi cisplatin. Metodologi: Sebanyak 24 ekor tikus dibagi menjadi 6 kelompok perlakuan. Induksi trombositopenia dilakukan dengan pemberian dosis tunggal cisplatin intravena 7 mg/Kg BB. Skrining fitokimia dekokta angkak dilakukan untuk mengetahui kandungan metabolit sekunder. Pemberian dekokta angkak peroral diberikan selama tujuh hari. Pemeriksaan kadar trombosit dilakukan dengan mengambil darah vena yang ditampung dalam tabung EDTA. Sampel darah diperiksa menggunakan Sysmex KX-21 hematology analyzer. Hasil: Berdasarkan skrining fitokimia dekokta angkak mengandung senyawa terpenoid, flavonoid, fenol, dan tanin. Kadar trombosit setelah pemberian dekokta angkak tidak berbeda signifikan dibandingkan dengan kelompok yang tidak diberi dekokta angkak. Kesimpulan: Pemberian dosis dekokta angkak peroral tidak dapat meningkatkan kadar trombosit secara bermakna pada tikus putih jantan galur Wistar trombositopenia yang diinduksi cisplatin dibandingkan dengan kelompok kontrol negatif

A global magnetic anomaly map

A subset of POGO satellite magnetometer data has been formed that is suitable for analysis of crustal magnetic anomalies. Using a thirteenth order field model, fit to these data, magnetic residuals have been calculated over the world to latitude limits of plus 50 deg. These residuals averaged over one degree latitude-longitude blocks represent a detailed global magnetic anomaly map derived solely from satellite data. Preliminary analysis of the map indicates that the anomalies are real and of geological origin

Housing Assistance Payment: Potential impacts on financial incentives to work. ESRI WP610, January 2019

Since March 2017, a new income-related housing support for those with a long-term housing need called Housing Assistance Payment (HAP) has been available throughout the state. This paper examines the potential impact on financial work incentives of transferring long-run Rent Supplement recipients onto HAP with tenants’ rental contributions assessed through a national Differential Rents scheme, initially proposed by the Housing Agency but yet to be implemented. While such a system would strengthen the financial incentive for most long-term Rent Supplement claimants to be in full-time paid work, a small minority would continue to face quite weak incentives. This is driven by the receipt of multiple means-tested benefits – in particular, jobseekers allowance and one-parent family payment – which results in some low-income individuals facing very high effective marginal tax rates from relatively low levels of earnings