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| 1 | Key factors determining biochar sorption capacity for metal contaminants:a literature synthesis显示文摘The sorption capacity and affinity of biochar for metals are both important attributes that determine biochar’s suitability as a soil amendment for contaminant mitigation,yet few analyses have considered both characteristics simultaneously.We present a systematic review of literature published between 2010 and 2018 to test the hypothesis that sorption capacity and affinity are affected by biochar properties,attributes of the metal contaminant,and experimental conditions,in that order.We used random forest(RF)and multi-objective optimization to analyze data of 559 individual Langmuir adsorption isotherms extracted from 133 studies covering the sorption capacity(C_(max))and affinity(K_(L))of biochar for 17 different metals,elabo-rated from six different feedstock classes,three different types of feedstock pretreatment,and five types of post-pyrolysis treatment.Highest sorption values were obtained for Pb(II),Cr(IV),and Cd(II).The feedstock used was the key determinant influencing biochar’s capacity and affinity to sorb metal contaminants(first and fourth most important variable in RF mod-els for C_(max) and K_(L),respectively)with best results obtained for biochar elaborated from nutrient-dense feedstocks(animal biowaste,sludge,and manure).Biochars that had both high sorption capacity and affinity were the result of a longer dura-tion of pyrolysis;they had lower C and higher N and O content,as well as lower C/N and higher O/C and H/C ratios,higher pore volumes and higher pH.Applying some form of pretreatment was better than none,whereas chemical modification was the best of the post-treatment methods analyzed.This review demonstrates clearly that multiple parameters during the preparation process influence the effectiveness of biochar to immobilize metal contaminants.Future research that focuses on mechanisms and the underlying factors for the correlations observed should allow the development of biochar formulations that are even more effective at immobilizing metal contaminants in soils and sediments. | Evert Thomas Nils Borchard Christian Sarmiento Rachel Atkinson Brenton Ladd | 2020 | Biochar2020，2，2： | 5 |
| 2 | GPS+GLONASS组合测量显示文摘最近人们开始讨论把GPS和GLONASS组合起来以扩大测量应用的可行性问题,主要是因为对这两种卫星系统的数据组合起来时会遇到技术上的挑战。本文将向您表明GPS+GLONASS技术能够为测量带来显著优势,这些优势包括大大增加卫星可用性和定位可靠性,而且提高作业效率又不降低精度,并能获得与当前GPS系统相同的精度。WiliamMartin等用该设备采集了数据并给出了实际结果。 | William Martin Jonathan Ladd | 1999 | 测绘通报1999，，6： | 3 |
| 3 | Characterization of a spruce budworm chitin deacetylase gene: Stage- and tissue-specific expression, and inhibition using RNA interference显示文摘 | Guoxing Quan Tim Ladd Jun Duan Fayuan Wen Daniel Doucet Michel Cusson Peter J. Krell | 2013 | Insect Biochemistry and Molecular Biology2013，，8： | 2 |
| 4 | The fate of nitrogen from legume and fertilizer sources in soils successively cropped with wheat under field conditions显示文摘 | Ladd J N Amato M | 1986 | Soil biochem1986，18，： | 1 |
| 5 | Stability evaluation during staged construction显示文摘 | Ladd C C | 1991 | Journal of Geotechnical Engineering ASCE1991，117，4： | 1 |
| 6 | The role of chronic peer adversity in the development of children's psychological adjustment problems显示文摘 | LADD G W TROOP-GORDON W | 2003 | Child Development2003，74，5： | 1 |
| 7 | Profiling gene tran-scription in vivo reveals adipose tissue as an immediate target of tumor necrosis factor alpha: Implications for insulin resistance 显示文摘 | Ruan H Miles PD Ladd CM | 2002 | Diabetes2002，51，11： | 1 |
| 8 | The Teacher-child Relationship and Children'S Early School Adjustment显示文摘 | Birch S H Ladd G W | 1997 | Journal of School Psychology1997，35，： | 1 |
| 9 | Therapeutic approach to unstable angina nitroglycerin,heparin and combined therapy显示文摘 | Jaffrumi NA Ehrenpreis S Ladd UA | 1993 | Am Heart J1993，126，15： | 1 |
| 10 | Non-enzymatic isolation and culture of channel catfish hepatocytes显示文摘 | William L Seddon C Ladd P | 1999 | Comparative Biochemistry and Physiology Part A 1231999，915，： | 1 |
| 11 | Numerical simulations of particulate suspensions via a discretized Boltzmann equation--part 1 : theoretical foundation显示文摘 | Ladd A J C | 1994 | J Fluid Mech1994，271，： | 1 |
| 12 | Intergenerational conflict reconsidered:county demographic structure and the demand for public education显示文摘 | Ladd Murray | | 0，，02： | 1 |
| 13 | Peer rejection,aggressive or with drawn behavior,and psychological malad justment form ages 5 to 12:An examination of four predictive models显示文摘 | Ladd G W | 2006 | Child Development2006，，77： | 1 |
| 14 | Carbon ( 613 C ) and nitrogen (615N) stable isotope composition in plant and soil in Southern Patagonia' s native forests 显示文摘 | Peri P L Ladd B Pepper D A | 2012 | Global Change Biology2012，18，1： | 1 |
| 15 | High-strain-rate plastic flow studied via noneqnilibrium molecular dynamics显示文摘 | Hoover WG Ladd AJC Moran B | 1982 | Physical Review Letters1982，48，26： | 1 |
| 16 | Impact of omphalocele size on associated conditions 显示文摘 | Kumar HR Jester AL Ladd AP | 2008 | J Pediatr Surg2008，43，12： | 1 |
| 17 | The green revolution: botanical contributions to forensics and and drug enforcement 显示文摘 | Miller CH Ladd C Palmbach T | 2001 | Crotation Medical Journal2001，42，3： | 1 |
| 18 | Feedback Control of Von Karman Vortex Shedding Behind a Circular Cylinder at Low Reynolds Numbers显示文摘 | Park D S Ladd D M Hendricks E W | 1994 | Physics of Fluids1994，6，7： | 1 |
| 19 | Factors affecting the initial stiffness of cohesive soils显示文摘 | Marika Santagata John T Germaine Charies Ladd | 2005 | Journal of Geotechnical and Geoenvironmental Engineering2005，131，4： | 1 |
| 20 | Soil microbial biomass: its assay and role in turnover organic matter C and N 显示文摘 | LADD J N AMATO M VEEN H A | 2004 | Soil Biology & Biochemistry2004，36，： | 1 |
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