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| 1 | 便携式粉尘观测仪测定腾格里沙漠和毛乌素沙地PM_(10)释放通量显示文摘中国北方沙漠和沙地是亚洲粉尘释放的重要源区,定量估算这一地区的粉尘释放量有助于评估区域大气环境质量及其气候效应.目前,对中国北方粉尘释放量的估算主要是基于模拟结果,野外直接观测数据很少.利用一种新型的粉尘释放观测仪器——便携式粉尘观测仪(PI-SWERL),测量腾格里沙漠和毛乌素沙地若干典型地表(沙丘、干湖、灌丛沙丘、河流冲积物等)的粉尘释放通量,获得了不同地表潜在粉尘释放量的直接观测数据.结果表明,不同地表的PM10释放通量存在较大差异,但均随摩阻风速的增加而增加.在相同的摩阻风速U*=0.55 m/s条件下,灌丛沙丘的PM10通量最高(0.70~10.23 mg/(m2 s)),河流冲积物次之(0.12~4.97 mg/(m2 s)),干湖湖底、沙丘等地表的通量较小(〈0.5 mg/(m2 s)).对比试验表明,破碎结壳地表释放的PM10通量是未破碎结壳的几倍甚至几十倍;披覆松散沙粒结壳地面的PM10释放通量高出未披覆的1~2个数量级.对比前人研究结果,PI-SWERL可以较好地反映不同源区粉尘释放的差异,对定量评估区域乃至全球的粉尘释放量等具有重要意义. | 崔梦淳 鹿化煜 SWEENEY Mark MASON Joseph 冯晗 徐志伟 | 2015 | 科学通报2015，60，17： | 12 |
| 2 | Sand dunes as potential sources of dust in northern China显示文摘While saltation bombardment of sand grains on a fine substrate can produce considerable dust, the well-sorted nature of sand dunes tends to preclude them from consideration as major dust sources. Recent research, however, has revealed that sand dunes can, in some cases, be large sources of dust. We used the PI-SWERL(Portable In-Situ Wind Erosion Laboratory) to measure in the field the potential of sand dunes and other desert landforms to emit particulate matter <10 μm(PM-10) dust in the Tengger, Ulan Buh, and Mu Us deserts of northern China. Combined with high resolution particle size measurements of the dune sand, an assessment of sand dunes as a dust source can be made. Large active transverse dunes tend to contain little to no stored PM-10, yet they produce a low dust flux. Coppice dunes stabilized by vegetation contain appreciable PM-10 and have very high dust emission potential. There is a positive correlation between the amount of PM-10 stored in a dune and its potential dust flux. Saltation liberates loose fines stored in dunes, making them very efficient dust emitters compared to landforms such as dry lake beds and washes where dust particles are unavailable for aeolian transport due to protective crusts or sediment cohesion. In cases where large dunes do not store PM-10 yet emit dust when active, two hypotheses can be considered:(1) iron-oxide grain coatings are removed during saltation, creating dust, and(2) sand grains collide during saltation, abrading grains to create dust. Observations reveal that iron oxide coatings are present on some dune sands. PI-SWERL data suggests that low dust fluxes from dunes containing no stored dust may represent an estimate for the amount of PM-10 dust produced by removal of iron oxide coatings. These results are similar to results from dunes in the United States. In addition, PI-SWERL results suggest that dust-bearing coppice dunes, which cover vast areas of China's sandy deserts, may become major sources of dust in the future if overgrazing, depletion of groundwater, or drought destabilizes the vegetation that now partially covers these dunes. | Mark R SWEENEY LU HuaYu CUI MengChun Joseph A MASON FENG Han XU ZhiWei | 2016 | Science China Earth Sciences2016，59，4： | 2 |
| 3 | Transfusion practices and costs in dogs显示文摘 | Alice Howard Beth Callan Mark Sweeney | 1992 | JAVMA1992，201，11： | 1 |
| 4 | Gene Transfer of Hepatocyte Growth Factor Attenuates Postinfarction Heart Failure显示文摘 | Vasant Jayasankar Y. Joseph Woo Lawrence T. Bish Timothy J. Pirolli Subhasis Chatterjee Mark F. Berry Jeffrey Burdick Timothy J. Gardner H. Lee Sweeney | 2003 | Circulation: Journal of the American Heart Association ( Suppl II)2003，，10： | 1 |
| 5 | Therapeutic magnets do not affect tissue temperatures显示文摘 | Kathleen B Sweeney Mark A Merrick CD | 2001 | J Athl Train2001，36，1： | 1 |
| 6 | Prospective Randomized Multicenter Trial of Empirical Antitachycardia Pacing Versus Shocks for Spontaneous Rapid Ventricular Tachycardia in Patients With Implantable Cardioverter-Defibrillators: Pacing Fast Ventricular Tachycardia Reduces Shock Therapies 显示文摘 | Mark S. Wathen Paul J. DeGroot Michael O. Sweeney Alice J. Stark Mary F. Otterness Wayne O. Adkisson Robert C. Canby Koroush Khalighi Christian Machado Donald S. Rubenstein Kent J. Volosin | 2004 | Circulation2004，，17： | 1 |
| 7 | Shock Reduction Using Antitachycardia Pacing for Spontaneous Rapid Ventricular Tachycardia in Patients With Coronary Artery Disease显示文摘 | Mark S. Wathen Michael O. Sweeney Paul J. DeGroot Alice J. Stark Jodi L. Koehler Michael B. Chisner Christian Machado Wayne O. Adkisson | 2001 | Circulation: Journal of the American Heart Association2001，，7： | 1 |
| 8 | Analysis of multiple polymorphisms in the bovine neuropeptide Y5 receptor gene and structural modelling of the encoded protein显示文摘 | Tanweer Alam Bojlul Bahar Sinéad Waters Mark McGee Torres Sweeney | 2012 | Molecular Biology Reports2012，，4： | 1 |
| 9 | Factors controlling the spatial and temporal variability of dust emissions显示文摘 | John A. Gillies William G. Nickling Vicken Etyemezian James King Mark Sweeney | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 0 |
| 10 | The safety,efficacy and pharmaceutical quality of male enhancement nutraceuticals bought online:Truth versus claim显示文摘Objective:Nutraceutical products are widely used for their claimed therapeutic benefits.However,falsified or adulterated nutraceuticals present a major health threat to consumers.This study investigates the pharmaceutical quality,safety and anti-inflammatory effects of six male enhancement nutraceuticals that claim to be 100%natural.Methods:Three batches of six male enhancement products were tested to detect the presence and levels of adulterants via high-performance liquid chromatography(HPLC).The pharmaceutical quality of the selected nutraceuticals was tested with near infrared spectroscopy(NIR)and Se De M.The cytotoxic effects of these products on HepG2 cells were determined through cell proliferation(XTT)and lactate dehydrogenase(LDH)cytotoxicity assays.Lastly,the in vitro inflammatory effects of these products were investigated using murine J774 macrophages through cytokine release analysis.Results:HPLC analysis detected the presence of sildenafil citrate,a vasodilator,and the active ingredient in Viagra and Revatio,in all batches of the products we analyzed.Amount of sildenafil citrate ranged from 0.45 mg to 51.85 mg among different batches.NIR assessment showed inter-and intra-batch heterogeneity in product composition.Results of the XTT and LDH assays showed significant cytotoxic effects of the analyzed products.XTT analysis revealed that the viability of HepG2 treated with tested products varied from 27.57%to 41.43%.Interestingly,the male enhancement products also showed anti-inflammatory effects.Conclusion:Despite their labeling as 100%natural,all products tested in this study contained levels of sildenafil citrate,which was not reported on the packaging.There was a lack of pharmaceutical uniformity among products of the same batch and across different batches.Additionally,the products we tested had cytotoxic effects.These study findings highlight the adulteration,poor quality and hazard of these nutraceuticals.Therefore,strict regulation of these products and standardization of the definition of nutraceuticals are urgently needed.Further,these falsely advertised products should be withdrawn from the market due to potential adverse effects on the health of their consumers. | Mohamed Ismail Nounou Heba AEassa Nada AHelal Khaled Aboul Fotouh Ihab Mansoor Isabel KLatz Cindy Zheng Hadeer AEassa Dina Mohamed Diana MHuynh Abigail RWiss Jessica Sweeney Monica TOakes Mark MMikhail Nadine Amine Harshvir Kaur Natalia Echeverry Kamila Orzechowski Doreen Szollosi | 2021 | Journal of Integrative Medicine2021，19，3： | 0 |
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