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| 1 | How beneficial are relational capital and technology orientation for innovation?Evidence from Mexican SMEs显示文摘Globally,small and medium-sized enterprises(SMEs)are engines of economic growth and job creation.After the pandemic,innovation activities have become more critical than ever as a generator of competitiveness.Therefore,we need to better understand the factors that lead to innovation in SMEs.This study aims to analyze the role of relational capital and technology orientation in innovation to appreciate its final impact on firm performance.The main results reveal a strong positive effect of relational capital on innovation,but the effect is not so strong as firm performance.We also found a strong positive effect of relational capital on technology orientation.Finally,we offer some clues in the debate on technology as a source of innovation and how relational capital and technology orientation are related to a firm’s performance.The results reveal significant implications for innovation policies and relational capital strategies for SMEs. | Edgar R.Ramírez-Solis Joan Llonch-Andreu Alberto D.Malpica-Romero | 2022 | International Journal of Innovation Studies2022，6，1： | 2 |
| 2 | 水硅铀矿及其他常见铀矿的铀浸出动力学比较(英文)显示文摘水热合成并表征水硅铀矿,在此基础上对水硅铀矿在硫酸体系中的浸出过程进行研究,并将结果与其他相关的合成U^(4+)矿物如氧化铀(UO_2)和钛铀矿(UTi_2O_6)在类似条件下的浸出速率和浸出率进行比较。浸出时间对铀溶出影响的研究表明,水硅铀矿在36~48 h被完全浸出,该反应的活化能为38.4 kJ/mol。与水硅铀矿相比,氧化铀矿的溶出速率明显较快,可以在3 h内达到完全溶出(E_a=42~84 kJ/mol)。比较而言,合成钛铀矿的浸出速率较水硅铀矿的明显更低,其144 h铀的最大浸出率只有18%。上述3种矿物溶出速率和提取率的显著区别与文献报道相符合,即矿物的可溶出性为氧化铀>水硅铀矿>钛铀矿。在天然水硅铀矿中,由于杂质的存在,其可溶出性可能会被进一步抑制。 | H.S.REYNOLDS R.RAM M.I.POWNCEBY Y.YANG M.CHEN J.TARDIO L.JONES S.K.BHARGAVA | 2018 | Transactions of Nonferrous Metals Society of China2018，28，10： | 1 |
| 3 | Invasive cichlids(Teleostei:Cichliformes)in the Amacuzac River,Mexico:Implications for the behavioral ecology of the native Mexican mojarra Amphilophus istlanus显示文摘The introduction of species is a leading cause of biodiversity loss and habitat alteration.Several species have invaded Mexican freshwater ecosystems,adversely affecting native fishes.Specifically,in the Amacuzac River of the Balsas Basin(Central Mexico),at least four non-native cichlids have been recorded:tilapia Oreochromis sp.,convict cichlid Amatitlania nigrofasciata,spotcheek cichlid Thorichthys maculipinnis,and green terror Andinoacara rivulatus.These species co-occur with the Mexican mojarra Amphilophus istlanus,the only native cichlid in the Basin.Invasive cichlids compete for resources such as shelter and food,and prey on offspring of the Mexican mojarra.In the presence of invasive cichlids,the costs and risks of foraging and finding available shelter increase for the native cichlid.Predation pressure from invasive cichlid fishes on the Mexican mojarra increases the time invested by parents in caring for offspring and their stress levels,potentially contributing to Mexican mojarra population declines.Here,we gathered the best evidence available to discuss some mechanisms and consequences of such co-occurrences in relation to reproductive behaviors,parental care,competition for resources,and dominance hierarchy,and how the four invasive cichlids have negatively affected the Mexican mojarra. | M.Franco E.Arce N.Mercado-Silva A.Cordoba-Aguilar R.Ramírez-Rodrígueze | 2023 | Water Biology and Security2023，2，3： | 0 |
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