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Record W7016171067

Đánh giá rủi ro sinh thái do tích luỹ kim loại nặng trong trầm tích mặt tại sông Bồng Miêu, Quảng Nam

2023· article· vi· W7016171067 on OpenAlexaboutno aff

Bibliographic record

VenueDOAJ (DOAJ: Directory of Open Access Journals) · 2023
Typearticle
Languagevi
FieldEngineering
TopicGeodetic Measurements and Engineering Structures
Canadian institutionsnot available
Fundersnot available
KeywordsSoutheast asiaCentral asiaNova scotiaGovernment (linguistics)
DOInot available

Abstract

fetched live from OpenAlex

Nghiên cứu này tiến hành đánh giá khả năng tích lũy và rủi ro sinh thái một số kim loại nặng (As, Pb, Cd, Hg, Cu, Cr, Zn) trong trầm tích mặt sông Bồng Miêu, tỉnh Quảng Nam. Kết quả nghiên cứu cho thấy, trong hai đợt lấy mẫu, nồng độ của các nguyên tố Hg, Cu, Cr, Zn, Cd trong trầm tích mặt đều nằm trong giới hạn cho phép của QCVN 43:2017/BTNMT (Quy chuẩn kỹ thuật Quốc gia về chất lượng trầm tích), riêng nồng độ As và Pb tại tất cả các vị trí lấy mẫu đều cao hơn nhiều lần so với QCVN 43:2017/BTNMT, cụ thể As cao hơn từ 4,1 - 25,4 lần, Pb cao hơn từ 2,3 - 7,8 lần. Nồng độ các kim loại nặng ở mùa khô có xu hướng cao hơn mùa mưa. Mức độ tích lũy ô nhiễm trong trầm tích của As, Pb ở mức nặng, có dấu hiệu ô nhiễm Cd, các kim loại nặng còn lại chưa thấy dấu hiệu ô nhiễm hoặc ô nhiễm nhẹ.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.306
Threshold uncertainty score0.990

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0030.001
Scholarly communication0.0030.001
Open science0.0010.003
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.3060.096

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.255
GPT teacher head0.525
Teacher spread0.270 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2023
Admission routes1
Has abstractyes

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