参考书目
发表于 2025-3-28 17:18:33
the generalizability of the effects of behavioral approaches across diagnostic groups or subgroups. Indeed, students with learning disabilities appear to be a heterogeneous group with regard to their etiology, related behavior problems, and academic deficits. However, it remains to be demonstrated t
啜泣
发表于 2025-3-28 22:08:01
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Largess
发表于 2025-3-29 02:08:43
The Phylogeny of the Diatoms naturalists alike (Round et al. 1990). More recently, ultrastructure, sexual reproduction, and the development of their unique type of zygote, called the auxospore, have also become the focus of research.
浪费时间
发表于 2025-3-29 05:01:10
Molecular Mechanism of Spicule Formation in the Demosponge ,: Silicatein-Collagen-Myotrophins (reviewed in: Bengtson 1994; Baeuerlein 2000). It is surprising that the occurrence of silica as a major skeletal element is restricted to some Protozoa and to sponges (Porifera). The element silicon (Si) contributes to 28% of the earth crust and is - after oxygen - the second most abundant element on earth (Windholz 1983).
Jogging
发表于 2025-3-29 07:31:44
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inhibit
发表于 2025-3-29 14:35:12
Living Inside a Glass Box — Silica in Diatomsal materials. This takes place not only in single-celled organisms, e.g. diatoms, but also in lower Metazoa like sponges as well as in higher plants. Silicon is one of the most abundant elements in the earth’s crust, second only to oxygen. Some geologists estimate that nearly 90% of all known minera
grovel
发表于 2025-3-29 17:05:05
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PAGAN
发表于 2025-3-29 21:38:19
The Phylogeny of the DiatomsThe beauty and unbelievable variation of their intricately shaped and ornamented silica cell wall, called the frustule, have attracted taxonomists and naturalists alike (Round et al. 1990). More recently, ultrastructure, sexual reproduction, and the development of their unique type of zygote, called
胆小懦夫
发表于 2025-3-30 03:48:01
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Morose
发表于 2025-3-30 05:00:01
Functions of Silicon in Higher Plantsty with oxygen, in nature Si always exists as silica (Si dioxide) or silicates which are combined with various metals. Si dioxide comprises about 60% of the earth’s crust. In soil, Si dioxide accounts for more than 50% and Si concentration in soil solution is between 3.5 and 40 mg Si L-1 in the form