Results 11 to 20 of about 442 (114)
Land tenure contributions to protected area growth under alternative conservation targets in the Australian monsoon tropics. [PDF]
Conserv BiolAbstract As the global protected area (PA) network expands to meet international targets, it is important to assess whether traditional reliance on public land will suffice for projected PA growth or whether other tenures, such as Indigenous or pastoral lands, may increasingly contribute.
Norris E, Scheele B, Cardillo M.
europepmc +2 more sources
Zhejiang Daxue xuebao. Lixue ban, 2007 应用微波消解，不经分离富集，用ICP-MS直接测定了9种茶叶中的15种痕量稀土元素.9种茶叶中轻稀土元素质量浓度较高，其质量浓度占被测稀土总质量浓度的80%以上.除陈香礼普和杭产绿茶稀土元素质量浓度相对较高外，其它茶叶品种间无明显的差异性.稀土元素的检出限均小于10 ng • L-1，各元素测定的RSD(n = 6)为1.85%~19.4%，样品加标回收率为97.1%~99.6%.
XUZi-gang(徐子刚) +2 more
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Shuitu Baochi Xuebao, 2022 为寻找可行的强化Cd污染土壤植物修复的方法,通过室内培养试验,设置7个不同稀释梯度木醋液添加处理,研究木醋液对石灰性重金属污染土壤的理化性质、酶活性和Cd形态的影响。结果表明:随木醋液浓度升高,土壤pH逐渐降低,EC(除原液外)无明显变化。土壤有机质、碱解氮、有效磷和速效钾含量较CK分别增加0.35%~66.64%,9.74%~96.10%,31.71%~56.64%,8.34%~30.87%。稀释10~100倍土壤脲酶、蔗糖酶和过氧化氢酶活性明显增加,而稀释5倍和木醋液原液处理土壤酶活性显著被抑制(P＜
吴苗苗 +6 more
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Shuitu Baochi Xuebao, 2007 模拟酸雨作用下红壤中稀土元素的释放水平大小依次为Pr＞Ce＞Nd＞Tb＞Sm＞La＞Er＞Ho＞Gd＞Dy＞Eu＞Y＞Lu≈Yb,轻稀土元素的释放水平要高于重稀土元素.酸雨对稀土元素的释放有明显的促进作用,且不同元素的CAR1/CCK、CR2/CCK比较接近(CAR1、CAR2和CCK分别表示pH4.5的酸雨、pH3.5的酸雨和对照3种情况下淋出液中稀土元素的含量).CAR1/CCK介于1.43～1.93之间,平均为1.61;CAR2/CCK介于1.76～2.27之间,平均为2.06,经过9 150 ...
许中坚, 张华, 史红文, 刘广深
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT This study developed a metal–modified fluoroethylene vinyl ether (FEVE) organic coating on 6061 aluminum alloy, supported by a micro‐arc oxidation (MAO) pretreatment layer, to enhance corrosion resistance and antifouling performance in marine environments.
Chang Liu +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The construction of core–shell grains can enhance the coercivity of Nd2Fe14B magnets. However, it is a significant challenge to elucidate the formation of these core–shell grains particularly regarding the spontaneous core–shell structure in Y‐substituted Nd2Fe14B alloys.
Sining Fan +13 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The surging demand for high‐performance NdFeB magnets has made it essential to achieve ultrahigh coercivity while minimizing the consumption of heavy rare earths. To tackle this challenge, this study proposes a Dy/Tb bilayer grain boundary diffusion strategy and systematically investigates the co‐diffusion behavior of Dy and Tb.
Rui Chang +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Al‐based neutron shielding materials suffer from poor laser powder bed fusion (LPBF) processibility, hindering their simultaneous achievement of good printability and exceptional mechanical properties. In this work, the newly developed rare‐earth Al alloy (i.e., Al‐6Mg‐5Gd) was processed by LPBF technique to meet the printability, mechanical ...
Chen Yang +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The intricate corrosion environment necessitates the polymeric coating's adaptability to the surroundings. In this work, the integration of rare‐earth Ce(III) ions and ethylene diamine tetramethylene phosphonic acid (EDTMP) in a layered double hydroxide (LDH) material is developed to enhance the corrosion protection and anti‐wear properties of
Yangu Liu +9 more
wiley +1 more source
四川大学学报. 自然科学版, 1993 研究了甘蔗喷施低浓度农用混合稀土硝酸盐溶液后,植株中稀土元素的含量和分布的变化情况.结果表明:蔗汁的稀土元素含量无明显变化,甘蔗喷施稀土不影响食用;稀土主要分布于叶片,尤其集中于生长活跃的顶部叶片;喷施稀土可促进植株吸收土壤中的可溶态稀土;植株中的稀土主要来源于土壤.
钟淑琳, 闵蔚宗, 李燕昆
doaj