97,488 papers found

Soil organic carbon (SOC) of agricultural soils is observed to decline in many parts of the world. Understanding the reasons behind such losses is important for SOC accounting and formulating climate mitigation strategies. Disentangling the impact of last century's climate change from effects of preceding land use, man…

BACKGROUND: Madelung deformity arises from a partial distal radial growth disturbance in combination with an abnormal hypertrophic ligament spanning the volar radius and carpus, termed, the Vickers ligament. The purpose of this study is to report long-term clinical and radiographic outcomes following Vickers ligament r…

The age-adjusted cardiovascular mortality rate has fallen by 40% in the United States over the last 30 years, primarily since the late 1960s. Although cardiovascular disease is still the leading cause of death in this country, the rate of deaths from cardiovascular disease have dropped to below 50%, and the rate contin…

The aim of this study was to know if cholecystectomy rates have decreased in young women, considering that these rates have decreased in the last years in the general chilean population. The frequency of previous cholecystectomy was compared in 1582 women aged 23.9 +/- 5.8 years admitted to a maternity for delivery bet…

Summarization of literary data on immobilization in calcium alginates as published in the last two years. The review focuses on those papers in which the new knowledge of immobilized enzymes, cells and tissues expands their biotechnological applications.

The perception of pain is highly subjective, being influenced by physical, emotional and cultural factors. The inadequate management of postoperative pain has been widely documented over the last 40 years.

As a result of the many different potential locations to be treated, it is still difficult to evaluate the indications for efficacy and safety of non-coronary percutaneous transluminal angioplasty (PTA) and stenting versus surgical methods, such as endarterectomy or bypass grafts. This paper reviews pertinent data publ…

The crime of 11 September 2002 is another aspect of the military culture of the last 5,000 years, which is also reflected in the continued conflict in Israel and Palestine. No real attempt has been made to convert the Oslo agreement into a permanent peace settlement, which must include a viable Palestinian state. Never…

An overview and new results are presented of the investigations carried out in the last 5 years on nano-sized tips by means of electron microscopy, an electron optical bench, and computation. Tungsten and, in particular, carbon nano-tips prepared by carbon contamination in a scanning electron microscope, were studied f…

It is told about twenty penetrating wounds of thorax in the last ten years. They deal with twelve stab wounds, five gunshot wounds and three impalement wounds. The organic lesions are dominated by wounds of lung. Drainage of thorax is chosen as therapy in uncomplicated cases. Thoracotomy was necessary in 6 cases, 5 of…

This paper is concerned with discussing various methodological components of cancer epidemiology. Developments in measuring disease frequency are acknowledged as well as the high level of sophistication of statistical methodology. Several examples are given to illustrate that methods for measuring exposure to factors w…

In the last 5 years the authors have treated 30 cases of external intestinal fistulas with total parenteral nutrition. These cases are described and the results analyzed in relation to fistular secretion, age of patients and the early timing of treatment.

BACKGROUND: In premarketing clinical trials conducted before Omicron emergence, BNT162b2 vaccine efficacy against COVID-19 was 90% in children. We conducted postmarketing evaluation of 1- and 2-dose vaccine effectiveness (VE) against Omicron BA.1, BA.2 and BA.4/5 subvariants in 5- to 11-year olds. METHODS: We estimate…

BACKGROUND: The aim of this study is to evaluate the impact of thymectomy in patients with thymic neoplasms and to identify clinical and histopathological factors associated with improved long-term outcome of surgery. METHODS: We treated 74 patients between February 1987 and July 1993. There were 29 total and 36 simpl…