Abstract Sources of dissolved and particulate carbon to the Fraser River system vary significantly in space time. Tributaries northern interior basin consistently deliver higher concentrations organic (DOC) main stem than other tributaries. Based on samples collected near mouth throughout 2013, radiocarbon age DOC exported from does not change across seasons despite a spike concentration during...

The basin of the Sinos River, located in the northeastern part of Rio Grande do Sul state, Brazil, has been highly impacted by industrial and urban activities. Water quality is low because of domestic and industrial sewage discharges. Most of the tributaries have suffered drastic structural interventions like canalisations and the removal of riparian vegetation. The aims of this study were to: ...

The cardiomyoplasty procedure involves the use of a transformed skeletal muscle to augment cardiac pump function or to substitute for the heart after parietal resection. This study of the intramuscular vascularization of latissimus dorsi was carried out in order to establish the relationship between the dominant thoracodorsal blood supply and the distal supply issued from the intercostal and lu...

The arterial blood supply of the spinal cord depends on a single anterior spinal artery and two posterior spinal arteries. The anterior spinal artery, which is the more important, commences within the cranial cavity by the union of the anterior spinal branches of each vertebral artery and subsequently is fed by several tributary arteries. Down the length of the spinal cord the anterior spinal a...

OBJECTIVE To determine the role of microvenous valves in the superficial venous system in the prevention of reflux and skin changes in the progression of venous insufficency. METHODS The venous anatomy of 15 amputated lower limbs, eight free from clinical venous disease and seven with varicose veins and ulcers, was examined using retrograde venography corrosion casting. Prior to amputation, a...

In this study, we aimed to characterize the fish community structure and identify the drivers contributing to homogenization/differentiation processes in four tributaries to the Pearl River, Guangxi Province, China, over the past few decades. We sampled 22 sites seasonally from 2013 through 2015, and these sites were selected based on archived records of previous sampling conducted in the 1980s...

The Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) [1][2][3][4] family of ITU-T standard protocols are designed to provide common, simple, and flexible interface for broadband optical fiber transmission systems. It enables direct octet-synchronous multiplexing of lower rate tributaries. SONET/SDH-compliant transmission systems are widely deployed by telephone carriers wor...

Infection with environmental mycobacteria is increasing among many Chesapeake Bay fish species. Prevalence in juvenile Atlantic menhaden differed between tributaries and ranged from 2% to 57%. Mycobacterial infection may be a syndromic sentinel of altered environmental conditions that threaten aquatic animal health.

A great amount of heavy metals enter Pampulha Reservoir via it's main tributaries (Sarandi and Ressaca). Although no water quality classification has been carried out for these tributaries, the reservoir is expected to be in class 2 of the CONAMA-86 system. As part of a monitoring scheme of the Pampulha Watershed, heavy metals (Zn, Pb, Cd, Ni, Cu, Cr, Mn and Fe) were investigated in the water a...

That river systems are networks consisting of links and nodes is one of their most obvious characteristics. Despite the ubiquity of confluences and tributary networks, the first century of modern fluvial geomorphology paid little consistent attention to river junctions and the interactions between tributaries and the main stem (Kennedy, 1984). Important exceptions include classic contributions ...