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Quantifying golf course nitrogen use efficiency

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Grassland Research 2022年第3期1卷 174-186页

作者： Michael A.H.Bekken douglas j.Soldat Department of Soil Science University of Wisconsin-MadisonMadisonWisconsinUSA

Background:Previous studies have surveyed golf courses to determine nitrogen(N)fertilizer application rates on golf courses,but no previous studies have attempted to quantify how efficiently golf courses use ***:This study tests the ability of the growth potential(GP)N Requirement model as a benchmarking tool to predict a target level of N use on 76 golf courses in 5 regions of the US(Midwest,Northeast,East Texas,Florida,Northwest)and 3 countries in Europe(Denmark,Norway,UK).Results:The ratio of the golf course-wide N application rate to the GP N requirement prediction(termed the nitrogen efficiency score or NES)was 0.27,indicating that golf courses used 73%less N than predicted by the *** such,the GP N Requirement model needs to be recalibrated to predict N use on golf *** was achieved by adj.sting the Nmax coefficient in the model.N rates on golf courses were widely variable both within and across *** regions had a coefficient of variation in N rates of 0.46 or ***:The high variation in N rates,which is largely unexplained by climate,economic factors,grass type,and soil type,may be indicative of inefficient N use in golf course management.

关键词： biophysical modeling decision support tools fertilizer golf growth potential nitrogen nitrogen efficiency turfgrass

Diagnostic and therapeutic role of endoscopic retrograde cholangiopancreatography in biliary rhabdomyosarcoma

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World j.urnal of Gastroenterology 2008年第30期14卷 4823-4825页

作者： Ryan W Himes Isaac Raij.an Milton j.Finegold Heidi V Russell douglas S Fishman Section of Pediatric Gastroenterology Hepatology & Nutrition Baylor College of Medicine Texas Children's Hospital Digestive Disease Associates of Houston Department of Pathology Baylor College of Medicine Texas Children’s Hospital Texas Children’s Cancer Center Baylor College of Medicine Section of Pediatric Gastroenterology Hepatology & Nutrition Baylor College of Medicine Texas Children’s Hospital

Biliary rhabdomyosarcoma (BRMS) is an uncommon childhood malignancy which has been managed surgically. We present a case of a 3-year-old boy with BRMS, in whom endoscopic retrograde cholangiopancreatography (ERCP) was successfully used both diagnostically and therapeutically, thus obviating the need for surgery and its attendant risks of morbidity and mortality. We conclude that ERCP is an effective alternative to surgery for BRMS in some patients.

关键词： Pancreaticobiliary Malignancy Pediatric Endoscopic retrograde cholangiopancreatography j.undice

Fuel characteristics, loads and consumption in Scots pine forests of central Siberia

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j.urnal of Forestry Research 2020年第6期31卷 2507-2524页

作者： Galina A.Ivanova Elena A.Kukavskaya Valery A.Ivanov Susan G.Conard douglas j.McRae V.N.sukachev institute of forest sb ras-separate subdivision of the federal research center“krasnoyarsk science center of the siberian branch of the russian academy of sciences” krasnoyarskrussia 660036 M.F.reshetnev siberian state university of science and technology krasnoyarskrussia 660049 Emeritus scientist rocky mountain research stationu.s.forest servicemissoulamt 59807usa George mason university fairfaxvausa Canadian forest service natural resources canada1219 queen street eastsault st5.marieon p6a 2e5canada

Forest fuel investigations in central and southern Siberian taiga of Scots pine forest stands dominated by lichen and feather moss ground vegetation cover revealed that total aboveground biomass varied from 13.1 to 21.0 kg/m *** biomass was higher in plots in the southern taiga,while ground fuel loads were higher in the central *** developed equations for fuel biomass(both aerial and ground)that could be applicable to similar pine forest sites of Central *** loading variability found among plots is related to the impact and recovery time since the last wildfi re and the mosaic distribution of living *** consumption due to surface fi res of low to high-intensities ranged from 0.95 to 3.08 kg/m 2,that is,18–74%from prefi re *** total amount of fuels available to burn in case of fi re was up to 4.5–6.5 kg/m *** content of fuels(litter,lichen,feather moss)was related to weather conditions characterized by the Russian Fire Danger Index(PV-1)and FWI code of the Canadian Forest Fire Weather Index *** data obtained provide a strong foundation for understanding and modeling fi re behavior,emissions,and fi re eff ects on ecosystem processes and carbon stocks and could be used to improve existing global and regional models that incorporate biomass and fuel characteristics.

关键词： Pinus sylvestris Tree biomass Surface and ground fuel loads Fuel moisture Fuel consumption

Nrf2 is required for normal postnatal bone acquisition in mice

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Bone Research 2014年第4期2卷 231-240页

作者： j.ng-Hyun Kim Vandana Singhal Shyam Biswal Raj.sh K Thimmulappa douglas j.Di Girolamo Department of Environmental Health Sciences Johns Hopkins Bloomberg School of Public HealthBaltimoreMDUSA Department of Orthopaedic Surgery Johns Hopkins University School of MedicineBaltimoreMDUSA

A large body of literature suggests that bone metabolism is susceptible to the ill effects of reactive species that accumulate in the body and cause cellular dysfunction. One of the body＇s front lines in defense against such damage is the transcription factor, Nrf2. This transcription factor regulates a plethora of antioxidant and cellular defense pathways to protect cells from such damage. Despite the breadth of knowledge of both the function of Nrf2 and the effects of reactive species in bone metabolism, the direct role of Nrf2 in skeletal biology has yet to be thoroughly examined. Thus, in the current study, we have examined the role of Nrf2 in postnatal bone metabolism in mice. Mice lacking Nrf2 （Nrf2-/-） exhibited a marked deficit in postnatal bone acquisition, which was most severe at 3 weeks of age when osteoblast numbers were 12-fold less than observed in control animals. While primary osteoblasts from Nrf2-/- mice functioned normally in vitro, the colony forming capacity of bone marrow stromal cells （BMSCs） from these mice was significantly reduced compared to controls. This defect could be rescued through treatment with the radical scavenger N-acetyl cysteine （NAC）, suggesting that increased reactive species stress might impair early osteoblastogenesis in BMSCs and lead to the failure of bone acquisition observed in Nrf2-/- animals. Taken together, these studies suggest Nrf2 represents a key pathway in regulating bone metabolism, which may provide future therapeutic targets to treat osteoporosis.

关键词： bone Nrf2 is required for normal postnatal bone acquisition in mice

Properties of Yogurt Ice Cream Mixes and Resulting Frozen Products Prepared by Various Ratios of Ice Cream Mix to Yogurt

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Food and Nutrition Sciences 2021年第12期12卷 1204-1216页

作者： douglas W. Olson Charles Boeneke Kayanush j. Aryana School of Nutrition and Food Sciences Louisiana State University Agricultural Center Baton Rouge LA USA

The effects of varying the ratio of ice cream mix to whole milk yogurt on the characteristics of the mixes and the resulting frozen products including their ice cream and frozen yogurt controls were investigated. Ratios of ice cream mix to yogurt included 100% yogurt for the frozen yogurt control, 25% ice cream mix and 75% yogurt, 50% ice cream mix and 50% yogurt, 75% ice cream mix and 25% yogurt, and 100% ice cream mix for the ice cream control. The resulting mixes were sampled for analysis of total solids content, fat content, pH, and viscosity and then frozen in a batch freezer. The frozen products were analyzed for MRS lactobacilli counts, rate of meltdown at 21°C (volume after 1 h and time for 15 mL to melt), and sensory properties (flavor and body/texture). The total solids contents ranged from 11.89% to 39.65%, and the fat contents ranged from 2.8% to 12.6% for the 100% yogurt and 100% ice cream mixes, respectively. The pH ranged from 4.55 for the 100% yogurt to 6.77 for the 100% ice cream mix. The 100% yogurt sample had the highest viscosity. As expected, the 100% yogurt and the 75% yogurt samples had the highest MRS lactobacilli counts. The rate of meltdown increased with the increasing proportion of ice cream in the yogurt ice cream. The frozen products consisting of 75% and 100% ice cream received the highest flavor scores and body/texture scores. Yogurt ice cream made from 75% ice cream usually had more desirable meltability and sensory properties than yogurt ice creams made from either 25% or 50% ice cream and provides an opportunity for delivering a desirable product that has a healthy image.

关键词： Yogurt Ice Cream Frozen Desserts Lactobacilli Sensory

Is iron overload in alcohol-related cirrhosis mediated by hepcidin?

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World j.urnal of Gastroenterology 2009年第46期15卷 5864-5866页

作者： Tariq Iqbal Azzam Diab douglas G Ward Matthew j.Brookes Chris Tselepis j.m Murray Elwyn Elias Department of Gastroenterology University Hospital BirminghamVincent Drive Depart ment of Cancer Studies University of BirminghamVincent Drive Department of Hematology University Hospital BirminghamVincent Drive

In this case report we describe the relationship between ferritin levels and hepcidin in a patient with alcohol-related spur cell anemia who underwent liver *** demonstrate a reciprocal relation-ship between serum or urinary hepcidin and serum ferritin,which indicates that inadequate hepcidin production by the diseased liver is associated with elevated serum *** ferritin level falls with increasing hepcidin production after *** inflammatory indices(IL6)nor erythropoietin appear to be related to hepcidin expression in this *** suggest that inappropriately low hepcidin production by the cirrhotic liver may contribute substantially to elevated tissue iron stores in cirrhosis and speculate that hepcidin replacement in these patients may be of therapeutic benefi t in the future.

关键词： Alcohol Iron Anaemia Hepcidin Cirrhosis

Reinterpretation of histology of proximal colon polyps called hyperplastic in 2001

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World j.urnal of Gastroenterology 2009年第30期15卷 3767-3770页

作者： Omer Khalid Sofyan Radaideh Oscar W Cummings Michael j.O'Brien j.hn R Goldblum douglas K Rex Department of Medicine Indiana University Medical CenterIndianapolisIN 46202United States Department of Pathology Indiana University Medical CenterIndianapolisIN 46202United States Department of Anatomic Pathology Boston University Medical CenterBostonMA 02118United States Department of Anatomic Pathology Cleveland ClinicClevelandOH 44195United States Division of Gastroenterology/Hepatology Indiana University Medical CenterIndianapolisIN 46202United States

AIM： To evaluate how proximal colon polyps interpreted as hyperplastic polyps in 2001 would be interpreted by expert pathologists in 2007.METHODS： ≥ 5 mm in interpreted pathologists 2007 by 3 GI Forty consecutive proximal colon polyps size, removed in 2001, and originally as hyperplastic polyps by general at Indiana University, were reviewed in pathologists.CONCLUSION： Many polyps interpreted as hyperplastic in 2001 were considered sessile serrated lesions by GI pathologists in 2007, but there is substantial inter-observer variation amongst GI pathologists.

关键词： Colonoscopy Colorectal polyps Hyperplasticpolyps Inter-observer variability Serrated adenomas Sessile serrated polyps

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Numerical methods

Persistent diarrhea with petechial rash-unusual pattern of light chain amyloidosis deposition on skin and gastrointestinal biopsies:A case report

1000年

作者： Faires j. douglas.

来源：畅想之星图书光盘版（南... 评论

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World j.urnal of Clinical Cases 2022年第28期10卷 10252-10259页

作者： Shawna E Bilton Nikhil Shah Diana Dougherty Sarah Simpson Alex Holliday Farhad Sahebj.m douglas j.Grider Department of Basic Science Education Virginia Tech Carilion School of MedicineRoanokeVA 24016United States Department of Internal Medicine Carilion ClinicRoanokeVA 24016United States Gastroenterology and Hepatology Section Department of Internal MedicineCarilion ClinicRoanokeVA 24016United States Dermatology Section Department of Internal MedicineCarilion ClinicRoanokeVA 24016United States Dominion Pathology Associates RoanokeVA 24018United States

BACKGROUND Amyloidosis is a rare disease characterized by extracellular deposition of misfolded protein aggregated into insoluble *** involvement in systemic amyloidosis is common,but is often subclinical or presents as vague and nonspecific *** is rare for gastrointestinal symptoms to be the main presenting symptom in patients with systemic amyloidosis,causing it to be undiagnosed until late-stage *** SUMMARY A 53 year-old man with diarrhea,hematochezia,and weight loss presented to a community *** with biopsy at that time was suspicious for Crohn *** to worsening symptoms including nausea,vomiting,and a new petechial rash,an abdominal fat pad biopsy was *** biopsy showed papillary and adnexal dermal amyloid deposition,in a pattern usually seen with cutaneous ***,Cytokeratin 5/6 was negative,excluding cutaneous *** patterns of nodular amyloidosis,subcutaneous amyloid deposits and perivascular amyloid were not *** Acid-Schiff stain was negative for lipoid proteinosis,Congo red was positive for apple green birefringence on polarization and amyloid typing confirmed amyloid light chain *** endoscopic biopsies of the gastrointestinal tract showed amyloid deposition from the esophagus to the rectum,in a pattern usually seen in serum amyloid A in the setting of chronic inflammatory diseases,including severe inflammatory bowel *** marrow biopsy showed kappa-restricted plasma cell *** Described is an unusual presentation of primary systemic amyloidosis,highlighting the risk of misdiagnosis with subsequent significant organ dysfunction and high mortality.

关键词： Light chain amyloidosis Diarrhea Endoscopy Petechial rash Plasma cell dyscrasia Case report