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Forest Ecosystems 2024年第3期11卷 339-346页

作者： Ewa Błonska Adam gorski Jarosław Lasota Department of Ecology and Silviculture Faculty of ForestryUniversity of Agriculture in Krakow29 Listopada 46 Str.31-425KrakowPoland

Decaying wood is an essential element of forest ecosystems and it affects its other *** aim of our research was to determine the decomposition rate of deadwood in various humidity and thermal conditions in the gaps formed in the montane forest *** research was carried out in the Babiog orski National *** research plots were marked out in the gaps of the stands,which were formed as a result of bark beetle *** plots were located in undisturbed *** research covered wood of two species–spruce and beech in the form of cubes with dimensions of 50 mm×50 mm×22 *** samples were placed directly on the soil surface and subjected to laboratory analysis after 36 months.A significant influence of the wood species and the study plot type on the physicochemical properties of the tested wood samples was *** characteristics strongly correlated with soil moisture.A significantly higher mass decline of wood samples was recorded on the reference study plots,which were characterized by more stable moisture *** decomposition of wood in the gaps regardless of the species is related to lower *** wood species covered by the study differed in the decomposition *** wood samples were characterized by a significantly higher decomposition rate compared to beech wood *** research has confirmed that disturbances that lead to the formation of gaps have a direct impact on the decomposition process of deadwood.

关键词： Bark beetle Beech Decomposition rate Forest ecosystem Mass decline Spruce Woody debris

Impact of cardiac magnet resonance imaging on management of ventricular septal rupture after acute myocardial infarction

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World Journal of Cardiology 2013年第5期5卷 151-153页

作者： Tobias Gassenmaier armin gorski Ivan Aleksic Nikolas Deubner Frank Weidemann Meinrad Beer Department of Radiology University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Cardiothoracic and Thoracic Vascular Surgery University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Internal Medicine I University Hospital Wuerzburg 97080 Wuerzburg Germany Department of Pediatric Radiology Institute of Radiology Medical University of Graz 8036 Graz Austria

A 74-year-old man was admitted to the cardiac catheterization laboratory with acute myocardial infarction. After successful angioplasty and stent implantation into the right coronary artery, he developed cardiogenic shock the following day. Echocardiography showed ventricular septal rupture. Cardiac magnet resonance imaging (MRI) was performed on the critically ill patient and provided detailed information on size and localization of the ruptured septum by the use of fast MRI sequences. Moreover, the MRI revealed that the ventricular septal rupture was within the myocardial infarction area, which was substantially larger than the rupture. As the patient's condition worsened, he was intubated and had intra-aortic balloon pump implanted, and extracorporeal membrane oxygenation was initiated. During the following days, the patient's situation improved, and surgical correction of the ventricular septal defect could successfully be performed. To the best of our knowledge, this case report is the first description of postinfarction ventricular septal rupture by the use of cardiac MRI in an intensive care patient with cardiogenic shock and subsequent successful surgical repair.

关键词： Cardiac magnetic resonance imaging Ventricular septal rupture Myocardial infarction surgical repair Extracorporeal membrane oxygenation

Round Top Mountain rhyolite(Texas, USA), a massive, unique Y-bearing-fluorite-hosted heavy rare earth element(HREE) deposit

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Journal of Rare Earths 2014年第1期32卷 90-96页

作者： PINGITORE Nicholas CLAGUE Juan gorski Daniel Department of Geological Sciences The University of Texas at El Paso Texas Rare Earth Resources

Round Top Mountain in Hudspeth County, west Texas, USA is a surface-exposed rhyolite intrusion enriched in Y and heavy rare earth elements （HREEs）, as well as Nb, Ta, Be, Li, F, Sn, Rb, Th, and U. The massive tonnage, estimated at well over 1 billion tons, of the deposit makes it a target for recovery of valuable yttrium and HREEs （YHREEs）, and possibly other scarce ele-ments. Because of the extremely fine grain size of the mineralized rhyolite matrix, it has not been clear which minerals host the YHREEs and in what proportions. REE-bearing minerals reported in the deposit included bastn？site-Ce, Y-bearing fluorite, xeno-time-Y, zircon, aeschynite-Ce, a Ca-Th-Pb fluoride, and possibly ancylite-La and cerianite-Ce. Extended X-ray absorption fine struc-ture （EXAFS） indicated that virtually all of the yttrium, a proxy for the HREEs, resided in a coordination in the fluorite-type crystal structure, rather than those in the structures of bastn？site-Ce and xenotime-Y. The YREE grade of the Round Top deposit was just over 0.05%, with 72%of this consisting of YHREEs. This grade was in the range of the South China ionic clay deposits that supply essentially all of the world’s YHREEs. Because the host Y-bearing fluorite is soluble in dilute sulfuric acid at room temperature, a heap leaching of the deposit appeared feasible, aided by the fact that 90%-95%of the rock consists of unreactive and insoluble feld-spars and quartz. The absence of overburden, remarkable consistency of mineralization grade throughout the massive rhyolite, prox-imity （a few km） to a US interstate highway, major rail systems and gas and electricity, temperate climate, and stable political location in the world’s largest economy all enhanced the potential economic appeal of Round Top.

关键词： heavy rare earth elements yttrium-beating fluorite yttrofluorite heap leaching rhyolite Round Top deposit

Specific and Selective Bacteriophages in the Fight against Multidrug-resistant Acinetobacter baumannii

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Virologica Sinica 2019年第4期34卷 347-357页

作者： Natalia Baginska Anna Pichlak Andrzej gorski Ewa Jonczyk-Matysiak Bacteriophage Laboratory Hirszfeld Institute of Immunology and Experimental TherapyPolish Academy of Sciences53-114 WroclawPoland Phage Therapy Unit Hirszfeld Institute of Immunology and Experimental TherapyPolish Academy of Sciences53-114 WroclawPoland Department of Clinical Immunology Transplantation InstituteMedical University of Warsaw53-114 WarsawPoland

Acinetobacter baumannii causes serious infections especially in immunocompromised and/or hospitalized *** *** strains are multidrug resistant and infect wounds,bones,and the respiratory *** studies are focused on finding new effective agents against *** therapy is a promising means to fight this bacterium and many studies on procuring and applying new phages against *** are currently being *** shown in animal models,phages against multidrug-resistant *** may control bacterial infections caused by this pathogen and may be a real hope to solve this dangerous health problem.

关键词： Acinetobacter baumannii Bacteriophages Phage therapy Multidrug resistance(MDR)

Bacteriophages and Lysins in Biofilm Control

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Virologica Sinica 2020年第2期35卷 125-133页

作者： Marzanna Lusiak-Szelachowska Beata Weber-Dabrowska Andrzej gorski Bacteriophage Laboratory Hirszfeld Institute of Immunology and Experimental TherapyPolish Academy of Sciences(HIIET PAS)R.Weigla 1253-114 WroclawPoland Phage Therapy Unit Hirszfeld Institute of Immunology and Experimental TherapyPolish Academy of Sciences(HIIET PAS)R.Weigla 1253-114 WroclawPoland

To formulate the optimal strategy of combatting bacterial biofilms,in this review we update current knowledge on the growing problem of biofilm formation and its resistance to antibiotics which has spurred the search for new strategies to deal with this *** on recent findings,the role of bacteriophages in the prevention and elimination of biofilm-related infections has been *** vitro,ex vivo and in vivo biofilm treatment models with single bacteriophages or phage cocktails have been compared.A combined use of bacteriophages with antibiotics in vitro or in vivo confirms earlier reports of the synergistic effect of these agents in improving biofilm ***,studies on the application of phage-derived lysins in vitro,ex vivo or in vivo against biofilm-related infections are *** strategy of combined use of phage and antibiotics seems to be different from using lysins and *** findings suggest that phages and lysins alone or in combination with antibiotics may be an efficient weapon against biofilm formation in vivo and ex vivo,which could be useful in formulating novel strategies to combat bacterial *** findings proved to be relevant in the prevention and destruction of biofilms occurring during urinary tract infections,orthopedic implant-related infections,periodontal and peri-implant *** conclusion,it appears that most efficient strategy of eliminating biofilms involves phages or lysins in combination with antibiotics,but the optimal scheme of their administration requires further studies.

关键词： Antibiotics Bacteriophages Biofilm Chronic diseases Lysins

Using yttrium as an indicator to estimate total rare earth element concentration:a case study of anthracite-associated clays from northeastern Pennsylvania

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International Journal of Coal Science & Technology 2020年第4期7卷 652-661页

作者： Xiaojing Yang Daniel Kozar Daniel gorski Anthony Marchese James Pagnotti Rusty Sutterlin Mohammad Rezaee Mark S.Klima Sarma V.Pisupati John and Willie Leone Family Department of Energy and Mineral Engineering and the EMS Energy Institute Center for Critical MineralsThe Pennsylvania State University110 Hosier BuildingUniversity ParkPA 16802USA Texas Mineral Resources Corporation.539 El Paso St Sierra BlancaTX 79851USA Pagnotti Enterprises 46 Public SquareWilkes-BarrePA 18701USA Inventure Renewables Inc161625th Avenue.TuscaloosaAL 35401USA

This study demonstrated using yttrium(Y)as an indicator to estimate the total rare earth element and Y contents(REY)in coal-associated samples and to facilitate selection of samples with high REY assays in a fast and inexpensive *** than 10 anthracite-associated samples were collected from each of three Pennsylvanian sites(sites B,J and C)based on Thorium gamma ray logging suggesting high REY *** samples from each site were analyzed by ICP-MS to determine the rare earth distribution patterns and to establish the site-specific linear equations of Y and *** Y contents of the remaining samples were measured by a portable X-ray fluorescence analyzer,and the REY values were estimated based on the site-specific linear equation developed earlier.R-squared values above 0.70 were obtained for all the estimation equations from all three sites on both a whole sample basis and an ash ***,ash content has been widely used as an indicator of high REY *** may not be applicable for a specific *** B in this study is an example where ash contents could not be statistically correlated with REY,so using Y for estimation is more *** demonstrated sample screening process is suitable for samples from sites that share more similar distribution patterns(either MREY or LREY or HREY)as well as for samples from sites that share multiple distribution patterns(LREY/MREY/HREY)depending on the desirable *** demonstrated process lowers the analytical cost from$70 to 80 dollars per sample to$10-15 per sample while significantly reducing the processing time and acid consumption for ICP *** is particularly true when a relatively large sample size is involved,for example,100 samples from one site analyzed by ICP-MS/OES.

关键词： Rare earth elements XRF analysis Correlations Prediction ICP analysis

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骨基质内酸性磷蛋白在生物矿化方面的作用

国外医学（创伤与外科基本问题分册） 1993年第3期14卷 159-161页

作者： gorski JP 朱振安

骨桥(Osteopontin)、骨涎蛋白和骨酸性糖蛋白-75是三种从矿化骨基质中提取并由成骨细胞合成的酸性磷蛋白,通常仅分布于钙化组织。虽然三种磷蛋白均是独特的基因产物,但有一些共同的特征,三者门冬氨酸或谷氨酸的含量均达30～36％,并含有... 详细信息

骨桥(Osteopontin)、骨涎蛋白和骨酸性糖蛋白-75是三种从矿化骨基质中提取并由成骨细胞合成的酸性磷蛋白,通常仅分布于钙化组织。虽然三种磷蛋白均是独特的基因产物,但有一些共同的特征,三者门冬氨酸或谷氨酸的含量均达30～36％,并含有多元磷酰基和涎酰基。酸性大分子物质与矿化的细胞调控密切相关。上述特征提示酸性磷蛋白参与钙结合和羟磷灰石结晶的核晶形成过程。然而,目前尚无这方面的直接证据。本文就酸性磷蛋白的功能提出两个假说。作者应用氨基酸顺序的新知识结合数据库资料的比较,揭示了这些蛋白质在骨钙处理方面的可能作用方式及其结构合理性。

关键词：磷蛋白酸性骨基质生物矿化

XRF Standardless Comparison of Mining Head and Tail Grades to Screen and Display Ore Processing Recoveries

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American Journal of Analytical Chemistry 2016年第11期7卷 785-796页

作者： Nicholas E. Pingitore Jr Juan W. Clague Daniel gorski Department of Geological Sciences The University of Texas at El Paso El Paso Texas USA Environmental Engineering & Public Health LLC El Paso Texas USA Texas Mineral Resources Corporation Sierra Blanca Texas USA

Separation of target elements or minerals from their host rock or ore is essential to successful mining operation. The inevitable loss of a portion of the desired material that accompanies each step in the extraction process must be documented to develop the operational protocol. Superposition of the characteristic X-ray fluorescence spectra of head (crushed rock ore particles, pre-processing) and tail (post-processing particles) samples provides a direct visual comparison of relative peak sizes, and thereby the relative concentrations, of elements of interest. If the head and tail peaks are identical, none of the element was recovered in the extraction process. At the other extreme if the tail peak “flat lines”, i.e., there is no peak, there was 100% recovery of that element. Standardless visual comparison is valid if the same mass of identical starting material is incorporated into the head and tail sample analysis pucks, and XRF analytical conditions are identical. The considerable time and expense of acquiring and calibrating the standards associated with XRF analysis of 75 or more elements are avoided, a significant advantage during initial broad screening of an experimental extraction procedure. Full quantitation by XRF or an alternate technique can proceed at a later project stage, if desired. The approach retains and presents all features of the original data, thus eliminating questions about data quality, standards and their calibration, and data manipulation in processing from raw counts to concentrations in printout tables. This form of display is ideal for both the mining professional and such less technical groups as corporate staff, investors, regulators, and the public. Examples presented herein are for heap leaching;the protocol can be applied as well to any of the other traditional ore processing and beneficiation procedures, e.g., gravity concentration, magnetic and electrical separation, froth flotation, and ore sorting.

关键词： XRF (X-Ray Fluorescence) Ore Processing Heap Leach Standardless Analysis Round Top Mountain Rare Earth Elements

Remarkably Consistent Rare Earth Element Grades at Round Top Yttrofluorite Deposit

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Advances in Materials Physics and Chemistry 2018年第1期8卷 1-14页

作者： Nicholas E. Pingitore Jr. Juan W. Clague Daniel gorski Department of Geological Sciences The University of Texas at El Paso El Paso TX USA Environmental Engineering & Public Health LLC El Paso TX USA Texas Mineral Resources Corporation Sierra Blanca TX USA

The peraluminous rhyolite that forms Round Top Mountain (approximately 375 m high × nearly 2 km in diameter), near Sierra Blanca, Hudspeth County, west Texas, USA, is enriched in yttrium and heavy rare earth elements (YHREEs), as well as Li, Be, U, Th, Sn, F, Rb, Cs, Nb, and Ta. Texas Mineral Resources Corp. (USA) proposes to release the YHREEs from their unique yttrofluorite host via heap leaching with dilute sulfuric acid. The inexpensive process also releases portions of valuable byproduct Be, Li, and U from accessory minerals amid the insoluble feldspars and quartz that comprise 90% - 95% of the surface-exposed rhyolite mountain. The objective of this study is to determine the consistency of mineralization grade, an important consideration in mine planning and preliminary economic analysis. The method is to plot elemental analyses of Y, Dy, Ho, Tm, Yb, Ce, Pr, Nd, Eu, Gd, Tb, U, and Nb from more than 1400 reverse circulation cuttings taken from 64 exploration drill holes against sample depth. The result of inspection of the plots reveals a remarkably homogeneous distribution of minor and trace elements throughout the sampled portion of the massive, 1.6-billion-tonne laccolith. The plots drive the conclusion that Round Top mine feedstock should remain constant for the life of the mine (multiple decades). Thus mining mechanics could be optimized at the start of operations and not require expensive later changes. The physical and chemical design of the heap leach and recovery and purification of target elements from pregnant leach solution also could be perfected during early development.

关键词： Heavy Rare Earth Elements Deposit Grade Round Top Mountain Heap Leach Mineral Processing

Microprobe Mapping of Rare Earth Element Distribution in Round Top Yttrofluorite Deposit

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Advances in Materials Physics and Chemistry 2018年第1期8卷 15-31页

作者： Nicholas E. Pingitore Jr. Margaret Piranian Lorraine M. Negron Daniel gorski Department of Geological Sciences The University of Texas at El Paso El Paso TX USA Texas Mineral Resources Corporation Sierra Blanca TX USA

The electron microprobe maps the spatial distribution of elements in a rock at a sub-mineral-grain scale to provide a basis for understanding mineralization processes and to determine optimal strategies for extraction of valuable target elements. Round Top Mountain (near the town of Sierra Blanca, Hudspeth County, west Texas, USA) is a peraluminous rhyolite laccolith that is homogeneously mineralized at over 500 ppm rare earths, more than 70% of which are yttrium and heavy rare earths (YHREEs). The massive deposit is exposed at the surface as a mountain some 2 km in diameter and 375 m in height. Round Top Mountain also contains Li, Be, U, Th, Nb, Ta, Ga, Rb, Cs, Sn, and F. The valuable YHREEs are hosted in yttrofluorite, which is soluble in dilute sulfuric acid. Texas Mineral Resources Corporation proposes to surface mine, crush, and heap leach the deposit. The distribution of YHREEs, and that of other trace elements, is remarkably homogeneous at outcrop drill hole scale. Here we document that YHREE mineralization appears pervasive through the rhyolite at a millimeter scale. Back scattered electron (BSE) and characteristic X-ray maps reveal the fine grain size and apparently random and dispersed spatial distribution of the yttrofluorite that hosts Round Top’s valuable YHREEs. The yttrofluorite grains do not appear to cluster at special mineralized locations, e.g., in pores or along cracks in the rhyolite. The same is apparently true of such other potentially valuable minerals as cassiterite and uranium species. These findings confirm that the distribution of YHREEs in Round Top Mountain rhyolite is homogeneous through different orders of magnitude of scale, i.e., from outcrop (as seen in the companion work in this volume) to sub-thin section. The material thus is ideal for a heap leach operation where homogeneous feedstock is crucial to consistent and economic operation. The findings also confirm and explain why mechanical separation would prove very difficult and e

关键词： Heavy Rare Earth Elements Yttrofluorite Electron Microprobe Micromapping Round Top