There is a general need to change hydropower operational regimes to balance the growing contribution of variable renewable energy sources in power systems. Quantifying the burden on generation equipment is increasingly uncertain and difficult. Here, we propose a framework combining technical and economic indicators to analyze primary frequency control (PFC) on a timescale of seconds.

Original Source

The genetic causes of cancer include both somatic mutations and inherited germline variants. Large-scale tumor sequencing has revolutionized the identification of somatic driver alterations but has had limited impact on the identification of cancer predisposition genes (CPGs). Here we present a statistical method, ALFRED, that tests Knudson’s two-hit hypothesis to systematically identify CPGs from cancer genome data.

Mineral exploitation has spread from land to shallow coastal waters and is now planned for the offshore, deep seabed. Large seafloor areas are being approved for exploration for seafloor mineral deposits, creating an urgent need for regional environmental management plans. Networks of areas where mining and mining impacts are prohibited are key elements of these plans.

PM2·5 air pollution is associated with increased risk of diabetes; however, a knowledge gap exists to further define and quantify the burden of diabetes attributable to PM2·5 air pollution. Therefore, we aimed to define the relationship between PM2·5 and diabetes. We also aimed to characterise an integrated exposure response function and to provide a quantitative estimate of the global and national burden of diabetes attributable to PM2·5.

The Orang Asli communities in Malaysia have been practicing indigenous agroforestry for generations, but little is known about the specifics of their practices. This study examined the indigenous management and sustainability of agroforestry practices, constraints experienced and contribution to household income. Data were collected from two Orang Asli villages practicing forest-garden agroforestry (FAF) and homegarden agroforestry (HAF). Tools of participatory rural appraisal namely semi-structured household interviews, group discussion and personal observation were used to collect data.

The bottom-up traffic emission model EMISENS is used to calculate hourly black carbon (BC) and nitrogen oxides (NOx) emission rates on an average workday in Maribor (Slovenia), using emission factors that were previously determined with the on-road chasing measurements in Slovenia. From modeled NOx emission rates and in-situ NOx measurements we empirically determined the hourly dispersion of traffic emissions and applied it to model BC concentrations using BC emission rates.

The early part of the last deglaciation is characterised by a ~40 ppm atmospheric CO2 rise occurring in two abrupt phases. The underlying mechanisms driving these increases remain a subject of intense debate. Here, we successfully reproduce changes in CO2, δ13C and Δ14C as recorded by paleo-records during Heinrich stadial 1 (HS1). We show that HS1 CO2 increase can be explained by enhanced Southern Ocean upwelling of carbon-rich Pacific deep and intermediate waters, resulting from intensified Southern Ocean convection and Southern Hemisphere (SH) westerlies.

Extensive erosion of high tidal mudflat along the northern parts of Gulf of Khambhat (GoK) was observed from the analysis of time series satellite images during the time period from March 2014 to September 2017. Around 28.66 sq. km area of high tidal mudflat eroded within this time period.

Original Source

There is a high correlation between urbanisation and the emission of greenhouse gases. Landfills and sewers in cities generate 15% of methane emissions; this sector offers immense possibilities for the mitigation of methane emissions in Asian megacities. Capturing methane by efficiency improvements in the working of both sewage treatment plants and sanitary landfills has co-benefits in terms of both public health as well as mitigating climate change.

A study of three villages in Jalpaiguri district, West Bengal, reveals that there is an alarming decline in female agricultural wage labour, resulting in de-feminisation, devastating poverty and outmigration of young boys and men in the Terai region. De-agrarianisation in combination with the revived patriarchal “good woman” ideology explains the crises of female wage labour. The Government of West Bengal’s Anandadhara programme seeks to integrate poor women into the financial flow through microcredit/self-helf groups.

Pages