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| 1 | Leaching of rare Earth elements from an Illinois basin coal source显示文摘The existence of rare earth elements(REEs) in coal sources at elevated concentrations has been the focus of several studies over the past decade. However, limited research has been conducted on methods to recover and refine the REEs. This paper reports the results of a detailed study into the potential of selectively recovering REEs in an Illinois basin coal source by leaching. Leaching characteristics are obtained for several segments obtained from a core sample as well as three different reject materials collected at a coal processing plant. Using a 1.2 mol/L sulfuric acid solution at 75 ℃,over 60% REE recovery is achieved from the direct floor and an inner parting material as well as the coal-rich core segments that are pretreated by low-temperature plasma oxidation to obtain access to the microdispersed mineral matter. In the leachable parting material, fluorapatite is detected by XRD analysis,which is one of the more soluble phosphate minerals with a documented association with REEs. For the three plant reject samples, the leaching recovery values obtained for the heavy REEs are higher than those obtained for the light REEs under the standard leaching conditions and when 0.1 mol/L(NH_4)_2SO_4 was used to extract REEs by an ion exchange mechanism. Thermal activation by roasting or chemical activation by pretreatment using 8 mol/L NaOH solution increases the total REE recovery with significantly higher gains obtained for the light REEs. Leaching kinetics are relatively fast within the first 2 h and then slow to provide relatively low overall recovery values under the standard test conditions for the coarse and fine reject samples. However, significantly higher recovery values are realized when treating mixed-phase(middling) particles existing within the coarse reject material. | X.Yang J.Werner R.Q.Honaker | 2019 | Journal of Rare Earths2019，37，3： | 4 |
| 2 | Inheritance and allelism of morphological traits in eastern redbud (Cercis canadensis L.)显示文摘Inheritance of purple,gold,and variegated foliage types,weeping architecture,and double flower was explored in F1,F2,and backcross families resulting from controlled hybridization of eastern redbud(Cercis canadensis L.).Potential allelic relationships were explored when possible.Inheritance analysis in families derived from controlled hybridization of‘Covey’(green leaf)and‘Forest Pansy’(purple leaf)suggest that purple leaf color and weeping architecture are both controlled by single recessive genes,for which the symbols pl1 and wp1 are proposed,respectively.Inheritance of gold leaf was explored in families of‘Covey’(green leaf)בHearts of Gold’(gold leaf).Interpretation of inheritance of gold leaf in these families was confounded by the recovery of a leaf color phenotype in the F2 family unlike either parent.However,data suggested the action of a single locus controlling gold leaf color in‘Hearts of Gold’,and that instability of gold leaf expression may be based on transposable element activity.Segregation of gold leaf in the F2 families of‘Texas White’[green leaf(C.canadensis var.texensis)]בJN2’[gold leaf(The Rising Sun)]did not fit a Mendelian ratio.Analysis of progeny of‘Silver Cloud’and‘Floating Clouds’(both showing white/green leaf variegation)with non-variegated cultivars demonstrated that variegation in‘Silver Cloud’is controlled by a single recessive nuclear gene,while variegation in‘Floating Clouds’is controlled by cytoplasmic factors.The symbol var1 is proposed for the gene controlling variegation in‘Silver Cloud’.Double flower in progeny derived from‘Flame’(double flower)suggested that double flower is dominant to single flower,and that‘Flame’is heterozygous at the double-flower locus,for which the symbol Df1 is proposed.Allelism studies showed that the gene controlling purple leaf in‘Forest Pansy’is allelic to the purple leaf gene in‘Greswan’and that the gene controlling weeping phenotype in‘Traveller’(C.canadensis var.texensis)is non-allelic to the weeping gene found in‘Covey’.Allelism of the gold leaf trait in‘Hearts of Gold’and‘JN2’was investigated,but no clear conclusions regarding allelism could be made due to recovery of leaf color phenotypes unlike either parent. | David J.Roberts Dennis J.Werner Phillip A.Wadl Robert N.Trigiano | 2015 | Horticulture Research2015，2，1： | 3 |
| 3 | Role of serum carbohydrate antigen 19‐9 and carcinoembryonic antigen in distinguishing between benign and invasive intraductal papillary mucinous neoplasm of the pancreas显示文摘 | S.Fritz T.Hackert U.Hinz W.Hartwig M. W.Büchler J.Werner | 2010 | Br J Surg2010，，1： | 1 |
| 4 | Will the traditional horticultural breeding and genetics research be fairly valued in academia?显示文摘I wrote the inaugural Editorial when Horticulture Research was launched in January 2014.This second Editorial was trigged by the manuscript that was submitted to Horticulture Research(HORTRES.2015.49,www.nature.com/articles/hortres201549),a summary of 17 years of traditional genetics on a woody ornamental tree called redbud. | Zong-Ming(Max)Cheng Dennis J.Werner | 2015 | Horticulture Research2015，2，1： | 0 |
| 5 | Primary care clinicians’ strategies to overcome financial barriers to specialty health care for uninsured patients显示文摘Objective:This study describes strategies used by federally qualified health centers(FQHCs)to assist medically uninsured patients in obtaining specialty health care services.Methods:Qualitative methods were used to study strategies for obtaining specialty health care for uninsured patients.Data were gathered from 10 primary care clinicians at three FQHC clinics by means of 10 semistructured interviews,23 brief interviews,and 45 h of direct observations.We captured additional data by studying cases of referred uninsured patients.Results:The following six strategies were identified:(1)quid pro quo-a specialist accept-ing the clinic’s medically uninsured patients was rewarded with referrals of the clinic’s insured patients;(2)over referral-clinicians referred insured patients whose needs could have been met at the FQHC;(3)brief hospitalization-when a specialist could not be obtained,high-risk patients were briefly hospitalized;(4)case building-diagnostic tests were conducted at the FQHC to justify a referral;(5)direct communication-communication between clinicians and specialists was neces-sary when requesting a referral;(6)specialty clinics-in return for conducting a specialty clinic at the FQHC,the specialist received all referrals of insured patients.Conclusion:Uninsured FQHC patients encountered difficulties accessing specialty health care,and in response,clinicians developed a range of innovative strategies. | James J.Werner Kitty K.Corbett | 2015 | Family Medicine and Community Health2015，3，3： | 0 |
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