Diurnal ocean surface layer model validation

The diurnal ocean surface layer (DOSL) model at the Fleet Numerical Oceanography Center forecasts the 24-hour change in a global sea surface temperatures (SST). Validating the DOSL model is a difficult task due to the huge areas involved and the lack of in situ measurements. Therefore, this report details the use of satellite infrared multichannel SST imagery to provide day and night SSTs that can be directly compared to DOSL products. This water-vapor-corrected imagery has the advantages of high thermal sensitivity (0.12 C), large synoptic coverage (nearly 3000 km across), and high spatial resolution that enables diurnal heating events to be readily located and mapped. Several case studies in the subtropical North Atlantic readily show that DOSL results during extreme heating periods agree very well with satellite-imagery-derived values in terms of the pattern of diurnal warming. The low wind and cloud-free conditions necessary for these events to occur lend themselves well to observation via infrared imagery. Thus, the normally cloud-limited aspects of satellite imagery do not come into play for these particular environmental conditions. The fact that the DOSL model does well in extreme events is beneficial from the standpoint that these cases can be associated with the destruction of the surface acoustic duct. This so-called afternoon effect happens as the afternoon warming of the mixed layer disrupts the sound channel and the propagation of acoustic energy

Honolulu Moon

With Ukulele arrangement. Contains advertisements and/or short musical examples of pieces being sold by publisher.https://digitalcommons.library.umaine.edu/mmb-vp/7085/thumbnail.jp

Reach of Supplemental Nutrition Assistance Program-Education (SNAP-Ed) interventions and nutrition and physical activity-related outcomes, California, 2011-2012.

IntroductionThis study combined information on the interventions of the US Department of Agriculture's Supplemental Nutrition Assistance Program-Education with 5,927 interview responses from the California Health Interview Survey to investigate associations between levels of intervention reach in low-income census tracts in California and self-reported physical activity and consumption of fruits and vegetables, fast food, and sugar-sweetened beverages.MethodsWe determined 4 levels of intervention reach (low reach, moderate reach, high reach, and no intervention) across 1,273 program-eligible census tracts from data on actual and eligible number of intervention participants. The locations of California Health Interview Survey respondents were geocoded and linked with program data. Regression analyses included measures for sex, age, race/ethnicity, and education.ResultsAdults and children from high-reach census tracts reported eating more fruits and vegetables than adults and children from no-intervention census tracts. Adults from census tracts with low, moderate, or high levels of reach reported eating fast food less often than adults from no-intervention census tracts. Teenagers from low-reach census tracts reported more physical activity than teenagers in no-intervention census tracts.ConclusionThe greatest concentration of Supplemental Nutrition Assistance Program-Education interventions was associated with adults and children eating more fruits and vegetables and adults eating fast food less frequently. These findings demonstrate the potential impact of such interventions as implemented by numerous organizations with diverse populations; these interventions can play an important role in addressing the obesity epidemic in the United States. Limitations of this study include the absence of measures of exposure to the intervention at the individual level and low statistical power for the teenager sample

Unlocking the mask: A look at the process by which authentic leaders impact follower attitudes and behaviors

The conceptual and empirical links between authentic leadership and follower attitudes, behaviors, and performance outcomes have not been fully developed. Although we have a number of articles developing the theory of authentic leadership and testing propositions that will appear in a forthcoming special issue of The Leadership Quarterly (Vol. 16, Issue 3, 2005), the focus of this article is to provide some of the initial foundation work for the broader theoretical framework of how authentic leaders influence follower attitudes, behaviors, and performance. Here, we draw from positive organizational behavior, trust, hope, emotion, identification, and identity theories to describe the processes by which authentic leaders exert their influence on followers’ attitudes and behaviors. Research propositions based on the proposed theoretical model and implications for future theory building and research are presented

“Can you see the real me?” A self-based model of authentic leader and follower development

To address present and future leadership needs, a model of authentic leader and follower development is proposed and examined with respect to its relationship to veritable, sustainable follower performance. The developmental processes of leader and follower self-awareness and self-regulation are emphasized. The influence of the leader’s and followers’ personal histories and trigger events are considered as antecedents of authentic leadership and followership, as well as the reciprocal effects with an inclusive, ethical, caring and strength-based organizational climate. Positive modeling is viewed as a primary means whereby leaders develop authentic followers. Posited outcomes of authentic leader–follower relationships include heightened levels of follower trust in the leader, engagement, workplace well-being and veritable, sustainable performance. Testable propositions and directions for exploring them are presented and discussed

Assessment of Program Delivery to Small Farmers: Fax Information Center System at Satellite Locations

Due to the many variables associated with small and part-time farmers, such as widely ranging educational levels and available time applied to farming, effectively providing extension information to this group of farmers can be quite difficult. The use of innovative, program delivery methods for reaching small and part-time farmers has been tried in several North Carolina counties with variable success. One means of reaching these special audiences is a satellite information center at agribusiness or other locations away from the extension office itself. A fax request system prominently placed directly in these satellite locations has produced widely variable results in level of use from the perspective of requests for information originating from the centers. Yet, where the centers have been used for both an information request system and an informational bulletin board with timely information sent to the centers from Cooperative Extension for posting on the bulletin boards, the results have been very favorable. While many factors have been found to affect the success of individual locations, the fax satellite centers appear to be able to provide a niche for innovative program delivery by extension and can have highly beneficial side effects of positively marketing the extension programs in the respective counties

The Use of Complementary and Alternative Medicine Supplements of Potential Concern during Breast Cancer Chemotherapy

Objective. While many Complementary and Alternative Medicines (CAM) are unlikely to interact negatively with conventional oncology treatment, some ingestible CAM substances have biological activities that may reduce the effectiveness of chemotherapy or radiation. This study surveyed women with breast cancer in order to document the extent to which women with breast cancer use these CAM substances of concern concurrently with conventional treatments. Methods. A total of 398 women completed a survey describing their use of CAM at various time points in their cancer treatment. This report focuses on a subsample of 250 women receiving chemotherapy or radiation who reported using specific one or more of several chemotherapies. Results. Of those participating, 104 (43.7%) of those receiving chemotherapy (n=238) and 45 (32.3%) of those receiving radiation (139; 58.4% of all patients) reported using one or more CAM substances that could be cause for concern when taken concurrently. Conclusion. Research is needed to understand the real risks associated with CAM and conventional polypharmacy. If risks associated with CAM conventional polypharmacy use prove to be substantial then improved systems to assure all women get advice regarding herb and supplement use during breast cancer treatment appear to be needed

Bacteriological and Physicochemical Qualities of Ebutte River in Ebutte Community, Uhunmwonde Local Government Area, Edo State, Nigeria

The bacteriological and physicochemical qualities of Ebutte River in Ebutte Community were carried out to ascertain the variation in the quality of the river between August, 2010 and January, 2011.The bacteriological and physicochemical assessments were studied using the basic microbiological techniques. The bacterial counts were shown to be highest in the inhabited point (3) while downstream (points 4 and 5) and upstream (points 1 and 2) recorded lower counts due to little or no human activities. The bacterial counts were higher than the acceptable limit of the WHO standards at all sampling points. The total viable counts ranged from 3.40 x 105 to 3.71 x 106cfu/ml for the months of August, 2010 to January, 2011. The bacterial counts were showed to be highest in the rainy season. The total coliform counts ranged from 27MPN/100ml to 350MPN/100ml while the faecal coliform counts ranged from 5MPN/100ml to 26MPN/100ml. The faecal Streptococci counts were recorded to range from <2MPN/100ml to 14MPN/100 and the Clostridium counts ranges from <2MPN/100ml to 6MPN/100ml. The bacterial isolates isolated and characterised includes eleven bacterial genera among which are Escherichia , Klebsiella , Pseudomonas , Bacillus , Enterobacter , Streptococcus , Salmonella , Staphylococcus , Proteus , Clostridium and Shigella . The results of most of the physicochemical parameters analysed were shown to be higher at sampling point 3, which is the point that had direct effect of human activities. Similarly the values obtained for dissolved oxygen was shown to be lowest in the inhabited sampling point 3. Analysis of variance showed that there was a high significant difference (P<0.001) between total viable counts obtained in the two seasons while a significant difference (P<0.05) was obtained for total coliform counts and faecal coliform counts. Significant difference (P>0.05) was obtained for faecal Streptococci and Clostridium perfrigens counts. Correlation coefficient showed positive relationship between the total viable counts and some of the physicochemical parameters studied. The Ebutte River water quality studied based on the bacteriological and physicochemical parameters revealed that the human, animal and agricultural activities plays significant role in the contamination of the water source

Actin Re-Organization Induced by Chlamydia trachomatis Serovar D - Evidence for a Critical Role of the Effector Protein CT166 Targeting Rac

The intracellular bacterium Chlamydia trachomatis causes infections of urogenital tract, eyes or lungs. Alignment reveals homology of CT166, a putative effector protein of urogenital C. trachomatis serovars, with the N-terminal glucosyltransferase domain of clostridial glucosylating toxins (CGTs). CGTs contain an essential DXD-motif and mono-glucosylate GTP-binding proteins of the Rho/Ras families, the master regulators of the actin cytoskeleton. CT166 is preformed in elementary bodies of C. trachomatis D and is detected in the host-cell shortly after infection. Infection with high MOI of C. trachomatis serovar D containing the CT166 ORF induces actin re-organization resulting in cell rounding and a decreased cell diameter. A comparable phenotype was observed in HeLa cells treated with the Rho-GTPase-glucosylating Toxin B from Clostridium difficile (TcdB) or HeLa cells ectopically expressing CT166. CT166 with a mutated DXD-motif (CT166-mut) exhibited almost unchanged actin dynamics, suggesting that CT166-induced actin re-organization depends on the glucosyltransferase motif of CT166. The cytotoxic necrotizing factor 1 (CNF1) from E. coli deamidates and thereby activates Rho-GTPases and transiently protects them against TcdB-induced glucosylation. CNF1-treated cells were found to be protected from TcdB- and CT166-induced actin re-organization. CNF1 treatment as well as ectopic expression of non-glucosylable Rac1-G12V, but not RhoA-G14A, reverted CT166-induced actin re-organization, suggesting that CT166-induced actin re-organization depends on the glucosylation of Rac1. In accordance, over-expression of CT166-mut diminished TcdB induced cell rounding, suggesting shared substrates. Cell rounding induced by high MOI infection with C. trachomatis D was reduced in cells expressing CT166-mut or Rac1-G12V, and in CNF1 treated cells. These observations indicate that the cytopathic effect of C. trachomatis D is mediated by CT166 induced Rac1 glucosylation. Finally, chlamydial uptake was impaired in CT166 over-expressing cells. Our data strongly suggest CT166's participation as an effector protein during host-cell entry, ensuring a balanced uptake into host-cells by interfering with Rac-dependent cytoskeletal changes

Porewater Carbonate Chemistry Dynamics in a Temperate and a Subtropical Seagrass System

Seagrass systems are integral components of both local and global carbon cycles and can substantially modify seawater biogeochemistry, which has ecological ramifications. However, the influence of seagrass on porewater biogeochemistry has not been fully described, and the exact role of this marine macrophyte and associated microbial communities in the modification of porewater chemistry remains equivocal. In the present study, carbonate chemistry in the water column and porewater was investigated over diel timescales in contrasting, tidally influenced seagrass systems in Southern California and Bermuda, including vegetated (Zostera marina) and unvegetated biomes (0–16 cm) in Mission Bay, San Diego, USA and a vegetated system (Thallasia testudinium) in Mangrove Bay, Ferry Reach, Bermuda. In Mission Bay, dissolved inorganic carbon (DIC) and total alkalinity (TA) exhibited strong increasing gradients with sediment depth. Vertical porewater profiles differed between the sites, with almost twice as high concentrations of DIC and TA observed in the vegetated compared to the unvegetated sediments. In Mangrove Bay, both the range and vertical profiles of porewater carbonate parameters such as DIC and TA were much lower and, in contrast to Mission Bay where no distinct temporal signal was observed, biogeochemical parameters followed the semi-diurnal tidal signal in the water column. The observed differences between the study sites most likely reflect a differential influence of biological (biomass, detritus and infauna) and physical processes (e.g., sediment permeability, residence time and mixing) on porewater carbonate chemistry in the different settings