Discarge compilation from The Global River Discharge (RivDIS) Project

The Global River Discharge (RivDIS) data set contains monthly discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station, with a mean of 21.5 years. These data were digitized from published UNESCO archives by Charles Voromarty, Balaze Fekete, and B.A. Tucker of the Complex Systems Research Center (CSRC) at the University of New Hampshire. River discharge is typically measured through the use of a rating curve that relates local water level height to discharge. This rating curve is used to estimate discharge from the observed water level. The rating curves are periodically rechecked and recalibrated through on-site measurement of discharge and river stage.

Sea urchins in a high CO2 world: partitioned effects of body-size, ocean warming and acidification on metabolic rate

Body-size and temperature are the major factors explaining metabolic rate, and the additional factor of pH is a major driver at the biochemical level. These three factors have frequently been found to interact, complicating the formulation of broad models predicting metabolic rates and hence ecological functioning. In this first study of the effects of warming and ocean acidification, and their potential interaction, on metabolic rate across a broad body-size range (two-to-three orders of magnitude difference in body mass) we addressed the impact of climate change on the sea urchin Heliocidaris erythrogramma in context with climate projections for east Australia, an ocean warming hotspot. Urchins were gradually introduced to two temperatures (18 and 23 °C) and two pH (7.5 and 8.0), and maintained for two months. That a new physiological steady-state had been reached, otherwise know as acclimation, was validated through identical experimental trials separated by several weeks. The relationship between body-size, temperature and acidification on the metabolic rate of H. erythrogramma was strikingly stable. Both stressors caused increases in metabolic rate; 20% for temperature and 19% for pH. Combined effects were additive; a 44% increase in metabolism. Body-size had a highly stable relationship with metabolic rate regardless of temperature or pH. None of these diverse drivers of metabolism interacted or modulated the effects of the others, highlighting the partitioned nature of how each influences metabolic rate, and the importance of achieving a full acclimation state. Despite these increases in energetic demand there was very limited capacity for compensatory modulating of feeding rate; food consumption increased only in the very smallest specimens, and only in response to temperature, and not pH. Our data show that warming, acidification and body-size all substantially affect metabolism and are highly consistent and partitioned in their effects, and for H. erythrogramma near-future climate change will incur a substantial energetic cost.

Central bank intervention and exchange rate behaviour : empirical evidence for India

This paper examines the causal relationship between central bank intervention and exchange returns in India. Using monthly data from December 1997 to December 2011, the empirical results derived from the CCF approach of Cheung and Ng (1996) suggest that there is causality-in-variance from exchange rate returns to central bank intervention, but not vice versa. These findings are robust in the sense that they hold in cases where the returns were measured from either the spot rate or the forward rate. Therefore, the results of this paper suggest that the Indian central bank has intervened in the foreign exchange market to respond to exchange rate volatility, although the volatility has not been influenced by central bank intervention in the form of net purchases of foreign currency in the market.

Ground cover and leaf area index relationship in a grass, legume and crucifer crop

Canopy characterization is essential for describing the interaction of a crop with its environment. The goal of this work was to determine the relationship between leaf area index (LAI) and ground cover (GC) in a grass, a legume and a crucifer crop, and to assess the feasibility of using these relationships as well as LAI-2000 readings to estimate LAI. Twelve plots were sown with either barley (Hordeum vulgare L.), vetch (Vicia sativa L.), or rape (Brassica napus L.). On 10 sampling dates the LAI (both direct and LAI-2000 estimations), fraction intercepted of photosynthetically active radiation (FIPAR) and GC were measured. Linear and quadratic models fitted to the relationship between the GC and LAI for all of the crops, but they reached a plateau in the grass when the LAI mayor que 4. Before reaching full cover, the slope of the linear relationship between both variables was within the range of 0.025 to 0.030. The LAI-2000 readings were linearly correlated with the LAI but they tended to overestimation. Corrections based on the clumping effect reduced the root mean square error of the estimated LAI from the LAI-2000 readings from 1.2 to less than 0.50 for the crucifer and the legume, but were not effective for barley.

Transgenic mice that overexpress the human trefoil peptide pS2 have an increased resistance to intestinal damage.

pS2 is a member of the trefoil peptide family, all of which are overexpressed at sites of gastrointestinal injury. We hypothesized that they are important in stimulating mucosal repair. To test this idea, we have produced a transgenic mice strain that expresses human pS2 (hpS2) specifically within the jejunum and examined the effect of this overexpression on proliferation and susceptibility to indomethacin-induced damage. A transgenic mouse was produced by microinjecting fertilized oocytes with a 1.7-kb construct consisting of rat intestinal fatty acid binding protein promoter (positions -1178 to +28) linked to full-length (490 bp) hpS2 cDNA. Screening for positive animals was by Southern blot analysis. Distribution of hpS2 expression was determined by using Northern and Western blot analyses and immunohistochemical staining. Proliferation of the intestinal mucosa was determined by assessing the crypt cell production rate. Differences in susceptibility to intestinal damage were analyzed in animals that had received indomethacin (85 mg/kg s.c.) 0-30 h previously. Expression of hpS2 was limited to the enterocytes of the villi within the jejunum. In the nondamaged intestine, villus height and crypt cell production rate were similar in transgenic and negative (control) litter mates. However, there was a marked difference in the amount of damage caused by indomethacin in control and transgenic animals in the jejunum (30% reduction in villus height in controls vs. 12% reduction in transgenic animals, P < 0.01) but the damage sustained in the non-hpS2-expressing ileal region was similar in control and transgenic animals. These studies support the hypothesis that trefoil peptides are important in stimulating gastrointestinal repair.

Kitāb al-Tanbīh wa-al-tadhkīr fī-mā ilayhi al-marjiʹ wa-al-maṣīr / taʼlīf ʻAbd al-Wahhāb al-Shaʻrānī : manuscript, undated

بسم الله الرحمن الرحيم الفصل الاول الحمد لله الذي نثر على وجه عروس الارض ... :Incipit

Hādhihi risālat al-ʻIqd al-thamīn fī sharḥ al-ḥadīth al-musalsal bi-al-Dimashqīyīn / taʼlīf al-Shaykh al-Imām al-ʻĀlim al-ʻĀmil al-Shaykh Ismāʻīl al-ʻAjlūnī : manuscript, [1749 or 1750]

Ownership statements on f. 1r signed ʻAlī al-ʻImādī, 1175 AH [1761 or 62 AD]; Ḥāmid al-Bakrī, 1192 AH [1178-9 AD]; Muḥammad ibn Saʻīd ibn Amīn al-Munayyir (or: al-Munīr), Jumādá al-Thānī 1243 [1827-8]. On fly leaf [1]: Muḥammad Saʻīd ... al-Ḥusaynī al-Dimashqī, Rabīʻ al-Awwal [1]282 [1865]; Muḥammad Abū al-... al-Ḥusaynī al-..., 17 Jumādá al-ūlá 1317 [1899];.