Publications by authors named "Janz B"

Article Synopsis
  • Crop residues contribute carbon and nitrogen to soils, significantly influencing nitrous oxide (N₂O) emissions, but current methods solely focus on N inputs without accounting for residue characteristics.
  • Different types of crop residues, especially immature ones, have varying effects on N₂O emissions due to their biochemical qualities, highlighting the need to differentiate between mature and immature residues in emission assessments.
  • To improve N₂O emission accounting, further research is required to establish emission factors for different residue types, understand emissions from belowground residues, enhance data on residue management, and evaluate the long-term impacts of residue addition on soil N₂O emissions.
View Article and Find Full Text PDF

High N-fertilizer applications to conventional vegetable production systems are associated with substantial emissions of NH, a key substance that triggers haze pollution and ecosystem eutrophication and thus, causing considerable damage to human and ecosystem health. While N fertilization effects on NH volatilization from cereal crops have been relatively well studied, little is known about the magnitude and yield-scaled emissions of NH from vegetable systems. Here we report on a 2-year field study investigating the effect of various types and rates of fertilizer application on NH emissions and crop yields for a pepper-lettuce-cabbage rotation system in southwest China.

View Article and Find Full Text PDF

Crop residues may serve as a significant source of soil emissions of NO and other trace gases. According to the emission factors (EFs) set by the Intergovernmental Panel on Climate Change (IPCC), NO emission is proportional to the amount of N added by residues to the soil. However, the effects of crop residues on the source and sink strength of agroecosystems for trace gases are regulated by their properties, such as the C and N content; C/N ratio; lignin, cellulose, and soluble fractions; and residue humidity.

View Article and Find Full Text PDF
Article Synopsis
  • The study highlights how nitrous oxide (NO) emissions from crop residue decomposition can negate the advantages of recycling those residues in agriculture.
  • Researchers tested various crop residues under controlled conditions, finding that their chemical composition significantly affected NO emission levels.
  • The findings suggest that higher nitrogen content in soluble components from fresh residues, like mustard and sugar beet, leads to greater NO emissions, indicating that understanding residue quality is crucial for predicting environmental impacts.
View Article and Find Full Text PDF

Populations of rodents such as common vole (Microtus arvalis) can develop impressive soil bioturbation activities in grasslands. These burrowing and nesting activities highly impact soil physicochemical properties as well as vegetation coverage and diversity. Managed grasslands in livestock production regions receive significant amounts of slurry, commonly at high loads at the beginning of the vegetation period.

View Article and Find Full Text PDF

Increasing water scarcity and rapid socio-economic development are driving farmers in Asia to transform traditionally flooded rice cropping systems into non-flooded crop production. The management of earthworms in non-flooded rice fields appears to be a promising strategy to support residue recycling and mitigate greenhouse gas (GHG) emissions triggered by residue amendment. We conducted a field experiment on non-flooded rainfed rice fields, with and without residue amendment.

View Article and Find Full Text PDF

Previous publications suggest a reduction in the ovarian reserve following ovarian surgery. The influence of the underlying disease, histology, size of the ovarian cyst and type of procedure remains unclear. The aim of this study was to investigate the influence of an ovarian operation on the ovarian reserve, based on the anti-Müllerian hormone levels.

View Article and Find Full Text PDF

Background: Lymphangiomas are benign lymphatic vessel hamartomas typically found in the skin or subcutaneous tissue of the head and neck. Although mostly seen in a congenital context, acquired forms have been reported. By contrast, cavernous hemangiomas are benign hamartomas of endothelial origin.

View Article and Find Full Text PDF

Global rice agriculture will be increasingly challenged by water scarcity, while at the same time changes in demand (e.g. changes in diets or increasing demand for biofuels) will feed back on agricultural practices.

View Article and Find Full Text PDF

We present the first known case of basal cell carcinoma arising in a split-thickness skin graft in the United States. The apparent low incidence of basal cell carcinoma in split-thickness skin graft attests to its unique environment and could possibly be attributed to the following: (1) the donor sites for split-thickness skin grafts are usually areas that are not subjected to heavy sun exposure; (2) individuals with skin grafts may not live as long on average, or their skin grafts may be subsequently excised with further reconstructive procedures; and (3) cases may be underreported. Because basal cell carcinomas have a fairly benign course, many patients either do not present to a physician or are not reported.

View Article and Find Full Text PDF

Purpose: Revascularized or replanted digits may fail because of vessel thrombosis. Off-label use of botulinum toxin type A injected subcutaneously has been used successfully in limited case series to treat vasospastic disorders. Botulinum toxin type B (BTX-B) is thought to have an earlier onset of action than type A in certain settings.

View Article and Find Full Text PDF

Although the physiologic effects of ear deformity are negligible, the aesthetic and psychological impact on the patient can be profound. Significant ear malformations are prevalent in today's society and affect more than 5 percent of the population. Although the prominent ear results from either underdevelopment of the antihelix or an enlarged conchal bowl, the constricted ear is a product of helical down-folding and height deficiency.

View Article and Find Full Text PDF

Constituting only 5 percent of facial fractures, frontal sinus fractures are relatively uncommon. However, given the great amount of force required to produce them, substantial morbidity is often seen. A thorough understanding of corrective techniques is essential when approaching these challenging injuries.

View Article and Find Full Text PDF

Background: The most common causes for diarrhea both in children and adults are of viral genesis. Thereby rota-, noro-, adeno-, and astroviruses are mentioned in descending order. The diagnosis of these frequently nosocomial infections can easily result from virus antigen detection of stool samples.

View Article and Find Full Text PDF

Background: Lymphedema, a chronic disfiguring condition resulting from lymphatic dysfunction or disruption, can be difficult to accurately diagnose and manage. Of particular challenge is identifying the presence of clinically significant limb swelling through simple and noninvasive methods. Many historical and currently used techniques for documenting differences in limb volume, including volume displacement and circumferential measurements, have proven difficult and unreliable.

View Article and Find Full Text PDF

Background: Abdominal wall hernias frequently occur after open bariatric surgical procedures. Standard repair with synthetic mesh may be suboptimal, with a recurrence rate as high as 50 percent. Patients often seek hernia repair in conjunction with abdominal body contouring procedures following substantial weight loss.

View Article and Find Full Text PDF

Learning Objectives: After studying this article, the participant should be able to: 1. Discuss the initial evaluation of a patient presenting with lower extremity enlargement. 2.

View Article and Find Full Text PDF

Polyenoylphosphatidylcholine (PPC: 100 or 300 mg kg-1 b.w., by gastric intubation for 30 days) produced a clearcut protection of the liver of rats treated with alloxan (150 mg kg-1 b.

View Article and Find Full Text PDF